                        RECOMMENDED FOR FULL-TEXT PUBLICATION
                            Pursuant to Sixth Circuit I.O.P. 32.1(b)
                                   File Name: 18a0122p.06

                 UNITED STATES COURT OF APPEALS
                                FOR THE SIXTH CIRCUIT



 UNITED STATES OF AMERICA,                             ┐
                                 Plaintiff-Appellee,   │
                                                       │
                                                       >      No. 17-1799
       v.                                              │
                                                       │
                                                       │
 TYRONE DEXTER CHRISTIAN,                              │
                              Defendant-Appellant.     │
                                                       ┘

                       Appeal from the United States District Court
                  for the Western District of Michigan at Grand Rapids.
               No. 1:15-cr-00172-1—Robert J. Jonker, Chief District Judge.

                                 Argued: March 9, 2018

                             Decided and Filed: June 26, 2018

               Before: GILMAN, ROGERS, and STRANCH, Circuit Judges.
                                _________________

                                       COUNSEL

ARGUED: Daniel A. Bihrle, UNIVERSITY OF TENNESSEE, Knoxville, Tennessee, for
Appellant. Timothy VerHey, UNITED STATES ATTORNEY’S OFFICE, Grand Rapids,
Michigan, for Appellee. ON BRIEF: Daniel A. Bihrle, Lucille A. Jewel, Wesley S. Love,
Grant E. Mitchell, Jack F. Smith, UNIVERSITY OF TENNESSEE, Knoxville, Tennessee, for
Appellant. Timothy VerHey, UNITED STATES ATTORNEY’S OFFICE, Grand Rapids,
Michigan, for Appellee.

    GILMAN, J., delivered the opinion of the court in which STRANCH, J., joined.
ROGERS, J. (pp. 33–40), delivered a separate dissenting opinion.
 No. 17-1799                        United States v. Christian                            Page 2


                                       _________________

                                            OPINION
                                       _________________

       RONALD LEE GILMAN, Circuit Judge. Tyrone Christian was convicted by a jury for
(1) possessing a controlled substance with the intent to distribute, in violation of 21 U.S.C.
§ 841(a)(1); (2) being a felon in possession of a firearm, in violation of 18 U.S.C. § 922(g)(1);
and (3) possessing a firearm in furtherance of a drug-trafficking crime, in violation of 18 U.S.C.
§ 924(c)(1)(A)(i). Before trial, Christian sought to suppress evidence obtained via a search
warrant that he argued was not supported by probable cause. He also challenged the admission
at trial of a recorded telephone call between two other individuals on the grounds that it was
inadmissible hearsay.    The district court denied the motion to suppress and admitted the
recording of the call.

       Christian renews both challenges on appeal.        For the reasons set forth below, we
REVERSE the judgment of the district court and REMAND the case for further proceedings
consistent with this opinion.

                                       I. BACKGROUND

       On September 3, 2015, a state magistrate issued a search warrant for Christian’s
residence located at 618 Grandville Avenue in Grand Rapids, Michigan (the Residence), based
on information contained in a four-and-a-half-page affidavit prepared by Thomas Bush, a Grand
Rapids police officer. But the equivalent of only one page of the affidavit is dedicated to facts
specifically related to Christian. The rest concerns generic information, including Officer Bush’s
qualifications and the nature of drug investigations.

       The search was carried out shortly after midnight on September 4, uncovering various
quantities of heroin, cocaine, and marijuana, as well as two firearms and sandwich bags with cut
corners. Christian was not present for the search, but was stopped and detained in his car nearby.

       Before trial, Christian sought to suppress the evidence from the search of the Residence,
arguing that the warrant was not based on probable cause. The district court denied the motion,
 No. 17-1799                        United States v. Christian                            Page 3


and the evidence was introduced at trial. Christian was convicted on all three counts with which
he was charged. He now timely appeals his conviction, contending that the district court erred
when it allowed evidence from the search to be introduced at trial.

       Officer Bush’s affidavit sought authorization to search the Residence for controlled
substances, firearms, records relating to trafficking in controlled substances, and any quantities
of cash that might be proceeds from the sale of controlled substances. In support of his request,
Officer Bush outlined his qualifications and experience in investigating drug crimes and noted
that he and other law-enforcement officers had become “involved in a drug investigation
involving Tyrone Christian.” He also provided six assertions of factual support relating to
Christian:

   •   The Grand Rapids Police Department had previously executed two search warrants at
       Christian’s residence in 2009 and 2011 as part of drug investigations targeting Christian.
       Arrests resulted from both searches (including the arrest of Christian’s wife for
       “maintaining a drug house”).
   •   Christian has been convicted of several drug-related crimes over a nineteen-year period:
       (1) possession of cocaine in 1996, (2) an unspecified second controlled-substance offense
       in 2002, (3) delivery/manufacture of marijuana and possession of a firearm by a felon in
       2009, and (4) delivery/manufacture of cocaine in 2011.
   •   In December 2014, Officer Bush “had contact with a credible and reliable informant who
       provided information on several drug traffickers including Tyrone Christian.” The
       affidavit states that the unnamed informant “provided names, nicknames, phone numbers,
       residences utilized by the drug traffickers and information regarding specific drug
       transactions,” and that Officer Bush was “able to confirm much of the information
       provided.”
   •   At the direction of Officer Bush, the informant conducted a controlled purchase of drugs
       from Christian at the Residence in January 2015, eight months before the warrant in
       question. The affidavit notes that the drugs purchased were field tested with positive
       results.
   •   “Within the last four months, [Officer Bush] has been involved in or received information
       from several debriefs of subjects who have stated that Tyrone Christian is a large scale
       drug dealer. These subjects further stated that they have purchased large quantities of
       heroin and crack cocaine from Christian at 618 Grandville Avenue [] in the last four to
       five months.”
   •   On September 3, 2015—the date that the warrant was requested and issued—surveillance
       of the Residence was established. A subject later identified as Rueben Thomas was seen
       “walk[ing] away from the area of 618 Grandville Avenue and leav[ing] the area in a
 No. 17-1799                          United States v. Christian                                Page 4


        vehicle.” Surveillance of the vehicle continued until officers conducted a traffic stop for
        a civil infraction. During the stop, officers seized approximately 20 grams of heroin from
        the vehicle. Thomas admitted to being on Grandville Avenue, but denied being at the
        Residence, “contrary to observations of the law enforcement officers.”

        In addition to contesting the validity of the search warrant, Christian argued at trial that
statements made during a recorded telephone call between Rueben Thomas and Thomas’s
girlfriend, Tanisha Edwards, constituted inadmissible hearsay and thus should not be admitted.
The call occurred while Thomas was in jail following his arrest on September 3, 2015. Edwards
informed Thomas during the call that he should be grateful to Christian because Christian had
removed “groceries”—allegedly referring to drugs and firearms—from Thomas’s home
following the arrest. This call was used to tie Christian to Thomas and to contraband later found
buried in the backyard of the house belonging to Christian’s mother.

                                           II. ANALYSIS

A.      The district court erred in denying Christian’s motion to suppress.

        1.      Standard of review

        “When reviewing a district court’s decision on a motion to suppress, we use a mixed
standard of review. . . .” United States v. Davis, 514 F.3d 596, 607 (6th Cir. 2008). We review
findings of fact under the clear-error standard and conclusions of law de novo. Id. “Whether a
search warrant affidavit establishes probable cause to conduct the search is a legal question that
this Court reviews de novo.” United States v. Brooks, 594 F.3d 488, 492 (6th Cir. 2010). “On
appeal of a district court’s decision on a motion to suppress, although we must view the evidence
in a light most likely to support the decision of the district court, when the district court itself is a
reviewing court, this court owes the district court’s conclusions no particular deference.” Id.
(citations omitted and alterations incorporated).        On the other hand, “[a]n issuing judge’s
findings of probable cause should be given great deference by the reviewing court and should not
be reversed unless arbitrarily exercised.” United States v. Higgins, 557 F.3d 381, 389 (6th Cir.
2009) (quoting United States v. Miller, 314 F.3d 265, 268 (6th Cir. 2002)).
 No. 17-1799                        United States v. Christian                             Page 5


       2.      Probable cause

       The Fourth Amendment provides that

       [t]he right of the people to be secure in their persons, houses, papers, and effects,
       against unreasonable searches and seizures, shall not be violated, and no
       [w]arrants shall issue, but upon probable cause, supported by [o]ath or
       affirmation, and particularly describing the place to be searched, and the persons
       or things to be seized.

U.S. Const. amend. IV. “‘At the very core’ of the Fourth Amendment ‘stands the right of a man
to retreat into his own home and there be free from unreasonable governmental intrusion.’”
Kyllo v. United States, 533 U.S. 27, 31 (2001) (quoting Silverman v. United States, 365 U.S. 505,
511 (1961)); see also Payton v. New York, 445 U.S. 573, 585 (1980) (“[T]he ‘physical entry of
the home is the chief evil against which the wording of the Fourth Amendment is directed.’”
(quoting United States v. U.S. Dist. Court for E. Dist. of Mich., 407 U.S. 297, 313 (1972))).

       “To establish probable cause adequate to justify issuance of a search warrant, the
governmental entity or agent seeking the warrant must submit to the magistrate an affidavit that
establishes ‘a fair probability that contraband or evidence of a crime will be found in a particular
place.’” Brooks, 594 F.3d at 492 (quoting United States v. Berry, 565 F.3d 332, 338 (6th Cir.
2009)). This requires “a nexus between the place to be searched and the evidence sought,”
United States v. McPhearson, 469 F.3d 518, 524 (6th Cir. 2006), at the time the warrant is
issued, United States v. Hython, 443 F.3d 480, 485 (6th Cir. 2006). The probable-cause standard
is practical and nontechnical. United States v. Frazier, 423 F.3d 526, 531 (6th Cir. 2005). In
other words, a reviewing court should consider the “totality of the circumstances” rather than
“engage in line-by-line scrutiny of the warrant application’s affidavit.”         United States v.
Williams, 544 F.3d 683, 686 (6th Cir. 2008). But the court must limit its “review of the
sufficiency of the evidence supporting probable cause . . . to the information presented in the
four-corners of the affidavit.” Frazier, 423 F.3d at 531.

       Christian argues that the warrant issued to search the Residence was not supported by
probable cause because each of the affidavit’s supporting facts was either stale or failed to
establish a sufficient nexus between the evidence sought and the Residence. To determine
whether the affidavit supported probable cause to search the Residence, we will first assess the
 No. 17-1799                        United States v. Christian                            Page 6


significance of each piece of evidence relied upon, and then we will consider all the evidence
together to determine whether the totality of the circumstances supports a finding of probable
cause.

         The dissent contends that our approach is inconsistent with the well-established mandate
to assess probable cause by considering the totality of the circumstances. Dissent Op. 33.
According to the dissent, we have engaged in a “divide-and-conquer-approach” to assess the
sufficiency of the affidavit that “has no place in our law.” Id. To the contrary, the totality-of-
the-circumstances approach requires us to examine each piece of evidence in the affidavit to
assess its probative value and then determine whether those pieces of evidence are as a whole
sufficient to establish probable cause. Gardenhire v. Shubert, 205 F.3d 303, 315 (6th Cir. 2000)
(noting that, in the context of an arrest, “[p]robable cause determinations involve an examination
of all facts and circumstances within an officer’s knowledge at the time of the arrest” (quoting
Estate of Dietrich v. Burrows, 167 F.3d 1007, 1012 (6th Cir. 1999))); United States v.
Valenzuela, 365 F.3d 892, 897 (10th Cir. 2004) (“[C]ourts may not engage in a ‘divide-and-
conquer’ analysis of facts to determine whether probable cause existed. However, neither may a
court arrive at probable cause simply by piling hunch upon hunch. Thus, in assessing the totality
of the circumstances, a reviewing court ‘must examine the facts individually in their context to
determine whether rational inferences can be drawn from them’ that support a probable cause
determination.” (citations omitted)).

                i.     Observations of Thomas

         As noted above, officers observed Thomas “walk away from the area” of the Residence
and leave in a vehicle on the day that the search warrant was issued. They followed Thomas and
stopped him after an unknown period of time for a driving infraction. During the stop, the
officers found approximately 20 grams of heroin in Thomas’s vehicle. Crucially, the affidavit
does not state that the officers saw Thomas entering or leaving the Residence, even though their
surveillance was targeted specifically at that property. Nor does it say that Thomas was seen
with Christian. In fact, the affidavit does not assert that there is any connection at all between
Thomas and Christian.
 No. 17-1799                         United States v. Christian                            Page 7


       True enough, the affidavit states that, during the traffic stop, “Rueben Thomas admitted
that he had recently been at an address on Grandville Avenue in the City of Grand Rapids but
denied being at 618 Grandville, contrary to observations of the law enforcement officers.” But
we decline to interpret this “contrary to observations” statement as an indication that officers saw
Thomas actually entering or leaving the Residence itself. Officer Bush was undoubtedly aware
that any evidence of Thomas being at the Residence would be highly relevant to the probable-
cause determination, but chose instead to state simply that Thomas was seen “in the area”—a
vague description that does not place Thomas at the Residence. Absent a direct statement that
Thomas was seen entering or leaving the Residence, or even at the Residence in any sense, we
are unwilling to read such a factual assertion into the affidavit.

       The dissent, on the other hand, contends that the affidavit’s lack of a direct statement that
Thomas was at the Residence is attributable to the “haste of a criminal investigation,” and that
we are in effect requiring the affidavit to include “magic words,” contrary to precedent from the
Supreme Court. Dissent Op. 34 (quoting Illinois v. Gates, 462 U.S. 213, 235 (1983)). But the
affidavit’s inclusion of the specific, nontechnical language “in the area” appears to us more
consistent with an honest acknowledgement that the officers did not observe Thomas on the
property itself. In fact, the common-sense meaning of the language “in the area” suggests that
Thomas was near but not at the Residence when observed.

       The dissent also notes that the affidavit “need only have alleged ‘facts that create a
reasonable possibility’” that “Thomas was seen leaving 618 Grandville.” Dissent Op. 35. This
statement reflects a subtle but crucial error. The affidavit must contain facts that establish
probable cause that evidence of drug activity would be present in the Residence at the time of the
search. Stated differently, probable cause must be established in relation to whether there is
evidence of drug activity in the Residence, not in relation to whether Thomas was seen leaving
the Residence. See United States v. Brooks, 594 F.3d 488, 492 (6th Cir. 2010) (“To establish
probable cause adequate to justify issuance of a search warrant, the governmental entity or agent
seeking the warrant must submit to the magistrate an affidavit that establishes ‘a fair probability
that contraband or evidence of a crime will be found in a particular place.’” (quoting United
States v. Berry, 565 F.3d 332, 338 (6th Cir. 2009))).
 No. 17-1799                        United States v. Christian                            Page 8


       So even if the affidavit had stated that Thomas was seen on the lawn or in the driveway
of the Residence, we would still have to speculate that Thomas was at one point inside the
Residence and, taking the speculation one step further, that he engaged in drug activity while
inside. Such an inference is made even more tenuous by the fact that there is nothing in the
affidavit to suggest that the heroin later recovered during the traffic stop was on Thomas’s
person, rather than simply in the car, when Thomas was observed walking in the area of the
Residence by the officers.

       This leaves us to consider the significance of the following: A single individual with no
known connection to Christian was seen walking away from the area of the Residence and then
leaving that area in a car. He was followed by officers to a subsequent location where a traffic
stop was conducted, during which heroin was found in the vehicle. If this provides any nexus at
all between evidence of drug trafficking and the Residence, that nexus is so speculative and
attenuated that it cannot, without more, support a finding of probable cause. See United States v.
Arvizu, 534 U.S. 266, 274 (2002) (noting that a hunch is insufficient to support a finding of
reasonable suspicion for a Terry stop, and that the reasonable-suspicion standard is easier to
satisfy than the probable-cause standard).

       To conclude otherwise would allow officers seeking a warrant to rely on speculation that
drug activity near a residence is related to that residence, significantly lowering the burden for
the government to show probable cause in communities where drugs are prevalent. Because the
government cites no case that would support such a proximity test for establishing probable
cause, we find that the officers’ observations of Thomas have little value on their own. But that
does not end our inquiry. We must consider, as we do below, whether other evidence in the
record bolsters or corroborates a connection between Thomas’s alleged drug activity and the
Residence, such that the magistrate could have found a fair probability that evidence of drug
trafficking would be found at the Residence at the time of the search.
 No. 17-1799                           United States v. Christian                         Page 9


               ii.    Tips from unidentified informants

       The affidavit further states:

       Within the last four months, your affiant has been involved in or received
       information from several debriefs of subjects who have stated that Tyrone
       Christian is a large scale drug dealer. These subjects further stated that they have
       purchased large quantities of heroin and crack cocaine from Christian at
       618 Grandville Avenue in the last four to five months.

       Officer Bush’s assertion that he received information from several unidentified subjects
omits critical particulars. Among other things, the affidavit does not tell us the number of
individuals who made the statements (“several” could indicate as few as three individuals),
explain what constituted a “debrief,” identify the contexts in which the debriefs occurred, or
specify the date that the information was received (all of the information could have been
received as many as four months before the search).

       More importantly, Officer Bush’s statement gives no indication as to the veracity or
reliability of the information obtained from the “subjects.” We have no way of knowing whether
Officer Bush or another officer had a relationship with any of the subjects. Nor did Officer Bush
assert any belief concerning the reliability or veracity of the subjects’ comments, let alone
provide any factual basis by which the magistrate could assess their reliability or veracity. See
United States v. Helton, 314 F.3d 812, 822 (6th Cir. 2003) (noting that, under Sixth Circuit
precedent, an affidavit “must contain a statement about some of the underlying circumstances
indicating the informant was credible or that his information was reliable” (quoting United States
v. Smith, 182 F.3d 473, 477 (6th Cir. 1999))).

       The affidavit’s complete failure to address the credibility and reliability of the
information provided by the subjects is even more glaring when juxtaposed with Officer Bush’s
inclusion of a paragraph supporting the credibility and reliability of the confidential informant
who conducted the controlled buy in January 2015. With regard to this latter informant, Officer
Bush stated that “[y]our affiant was able to confirm much of the information provided by the
credible and reliable informant through information maintained by the Grand Rapids Police
Department, other credible and reliable informants, public information sources and other law
enforcement agencies.” Because Officer Bush knew that hearsay statements from informants
 No. 17-1799                         United States v. Christian                            Page 10


should be accompanied by an explanation of their credibility and reliability, his failure to do so
with respect to information obtained from the unidentified subjects implies the absence of any
such indicia.

       An affidavit establishing probable cause based on an informant’s tip must also provide
facts identifying the basis of the informant’s knowledge. Frazier, 423 F.3d at 532. “The ‘basis
for knowledge’ factor uses the degree of detail in a tip to infer whether the tipster ‘had a reliable
basis for making his statements.’” Helton, 314 F.3d at 822 (quoting Smith, 182 F.3d at 477). In
Helton, the court determined that an anonymous tip was “sparse in relevant detail,” causing it to
“lose[] persuasive value” where the informant stated that he had been inside the residence that
was searched and had seen stacks of money, but “did not describe which rooms he or she visited,
where he or she saw the stacks of money, how high the stacks of money were, or how the stacks
were stored.” Id.

        Although Officer Bush’s affidavit suggests that the basis of the subjects’ knowledge was
that they had each purchased drugs from Christian at the Residence, the affidavit provides almost
no details about the purchases beyond identifying the types of drugs involved. The unidentified
subjects did not state exactly when they purchased drugs from Christian, the amount of the drugs
purchased, or whether they entered the Residence and saw any controlled substances or other
evidence of drug trafficking inside. This lack of detail further reduces the persuasive value of
the information obtained from these sources.

       “[I]n the absence of any indicia of the informants’ reliability, courts insist that the
affidavit contain substantial independent police corroboration.” Frazier, 423 F.3d at 532. There
is no evidence in the present case that the police corroborated any of the information obtained
from the unidentified subjects. The affidavit does not indicate that the police engaged in any
ongoing surveillance of the Residence, conducted subsequent controlled purchases, or otherwise
tried to verify that Christian was currently using the Residence to sell drugs. And although the
police established surveillance of the Residence on the very day that the affidavit was executed,
this surveillance did not yield any observations by law enforcement suggesting that Christian
was then using the Residence as a base of operations.
 No. 17-1799                         United States v. Christian                            Page 11


       Because the information from these unidentified subjects lacks any indicia of veracity or
reliability and was not corroborated by subsequent police investigation, it should be accorded
very little weight in determining whether there was probable cause to search the Residence. See
United States v. McPhearson, 469 F.3d 518, 524 n.3 (6th Cir. 2006) (“Thus, an allegation of
drug dealing based on information from an untested confidential informant is insufficient to
establish probable cause to search the alleged drug dealer’s home.            However, where the
allegation of drug dealing is coupled with independently corroborated information from police
officers, it may be sufficient to establish probable cause.”); Helton, 314 F.3d at 822 (concluding
that little weight should be given to statements from an informant whose reliability has not been
determined); see also United States v. Allen, 211 F.3d 970, 976 (6th Cir. 2000) (noting that an
anonymous tip, even one that is “rich in particulars,” will not be enough to establish probable
cause if only innocent details are corroborated by the police, but holding that a magistrate may
find probable cause to search a residence when “a known person, named to the magistrate, to
whose reliability an officer attests with some detail, states that he has seen a particular crime and
particular evidence, in the recent past”).

                 iii.   The January controlled buy

       Christian also contends that the evidence of the January 2015 controlled buy was stale
when the affidavit was executed in September 2015 and thus could not have supported a finding
of probable cause to search the Residence. The government disputes this contention, arguing
that because the officers sought records and indicia of continuous drug trafficking, the evidence
was not stale.

       “[S]tale information cannot be used in a probable cause determination.” United States v.
Perry, 864 F.3d 412, 414 (6th Cir. 2017) (quoting United States v. Frechette, 583 F.3d 374, 377
(6th Cir. 2009)); see also United States v. Harris, 255 F.3d 288, 299 (6th Cir. 2001) (“Because
probable cause to search is concerned with facts relating to a presently existing condition, . . .
there arises the unique problem of whether the probable cause which once existed has grown
stale.” (quoting United States v. Spikes, 158 F.3d 913, 923 (6th Cir. 1998))). Whether evidence
is stale is a flexible inquiry that does not “create an arbitrary time limitation within which
discovered facts must be presented to a magistrate.” United States v. Greene, 250 F.3d 471, 480
 No. 17-1799                        United States v. Christian                           Page 12


(6th Cir. 2001) (quoting Spikes, 158 F.3d at 923). “A key but by no means controlling issue is
the length of time between the events listed in the affidavit and the application for the warrant.”
United States v. Leaster, 35 F. App’x 402, 406 (6th Cir. 2002). Courts should consider several
factors, including:

       [1] [t]he character of the crime (chance encounter in the night or regenerating
       conspiracy?), [2] the criminal (nomadic or entrenched?), [3] the thing to be seized
       (perishable and easily transferable or of enduring utility to its holder?), [4] the
       place to be searched (mere criminal forum of convenience or secure operational
       base?).

Greene, 250 F.3d at 480–81 (quoting Spikes, 158 F.3d at 923).

                      a. Second and fourth factors

       There is little question that the second and fourth factors weigh in favor of finding that
the evidence of the January controlled buy was not stale. The affidavit supports the conclusion
that Christian had been occupying the Residence in Grand Rapids since at least 2009 and was
thus “entrenched” in the community. See Frechette, 583 F.3d at 379 (finding that the defendant
was entrenched when evidence in the affidavit indicated that he had lived in the residence in
question for 16 months). Moreover, courts have repeatedly held that a defendant’s residence “is
clearly a ‘secure operational base.’” Id. (citing United States v. Paull, 551 F.3d 516, 522 (6th
Cir. 2009)); see also United States v. Powell, 603 F. App’x 475, 478 (6th Cir. 2015) (noting that
an individual’s home “is more like a secure operational base than a mere forum of
convenience”).

                      b. First factor

       The first and third factors, however, weigh in favor of finding that the evidence of the
controlled buy was stale. With regard to the first factor, “[i]f an affidavit recites activity
indicating protracted or continuous conduct, time is of less significance.” United States v.
Henson, 848 F.2d 1374, 1382 (6th Cir. 1988) (quoting United States v. Haimowitz, 706 F.2d
1549, 1554–55 (11th Cir. 1983)). The Sixth Circuit has used both the terms “protracted and
continuous” and “ongoing and continuous.” Compare Perry, 864 F.3d at 415, with United States
v. Hython, 443 F.3d 480, 485 (6th Cir. 2006).        Both variations appear to encompass two
 No. 17-1799                         United States v. Christian                            Page 13


principles: that the conduct extended over a significant period of time and that it continued up to
(or close to) the time of the search. (For clarity, we will use “protracted” for the first principle
and “continuous” for the latter.) The key question, then, is whether the affidavit contains facts
supporting an inference that Christian was engaged in recurrent or sustained drug-trafficking
activity up to the time of the search.

       As this circuit has pointed out:

       The crime at issue in this case—the sale of drugs out of a residence—is not
       inherently ongoing. Rather, it exists upon a continuum ranging from an
       individual who effectuates the occasional sale from his or her personal holdings of
       drugs to known acquaintances, to an organized group operating an established and
       notorious drug den. The inclusion of outdated information has been insufficient
       to render an entire affidavit stale when the affidavit as a whole establishes that the
       criminal activity in question is ongoing and continuous, or closer to the “drug
       den” end of the continuum.

Hython, 443 F.3d at 485. But if the affidavit, taken as a whole, suggests that the defendant is
engaged in something closer to the “occasional sale from . . . personal holdings[,]” id., then
“information goes stale very quickly ‘because drugs are usually sold and consumed in a prompt
fashion[,]’” United States v. Brooks, 594 F.3d 488, 493 (6th Cir. 2010) (quoting Frechette,
583 F.3d at 378).

       Again, we must focus on what the warrant application establishes through its factual
assertions, not the conclusory statements made by the affiant.         United States v. Williams,
544 F.3d 683, 687 (6th Cir. 2008) (finding that a warrant application demonstrated continuous
illegal firearm activity where it stated that the defendant possessed two firearms, had used a
firearm to rob a drug trafficker one month prior, was recently arrested for carrying a concealed
weapon, and was also recently arrested for possession of a stolen vehicle where a gun was found
in the vehicle). Here, Officer Bush explains that “a credible and reliable informant” engaged in a
controlled purchase of drugs from Christian at the Residence in January 2015, eight months
before Officer Bush sought the warrant at issue in this case. But the affidavit provides almost no
detail regarding the controlled buy—it does not state whether the officers observed the buy,
identify the type or amount of the controlled substance purchased, indicate how the purchase was
initiated, or reveal if the informant had purchased drugs from Christian previously. Nor does the
 No. 17-1799                        United States v. Christian                           Page 14


affidavit disclose whether the informant saw large quantities of drugs in Christian’s possession
or in the Residence. See United States v. Abernanthy, 843 F.3d 243, 255 (6th Cir. 2016) (noting
that a large quantity of drugs found in a trash can outside of a residence would suggest “repeated
and ongoing drug activity in the residence”). Nothing about the January 2015 single controlled
buy of an unknown quantity of an unknown drug by an informant with an unknown relationship
to Christian suggests that Christian was engaged in protracted or continuous drug trafficking.

       In denying Christian’s motion to suppress, the district court recognized that the credible
informant engaged in only a single buy in January 2015, but emphasized that the informant
provided information describing Christian’s involvement in a “more extensive network of
trafficking.”   A review of the affidavit, however, does not support the district court’s
observation. The affidavit states that the credible informant “provided information on several
drug traffickers including Tyrone Christian.” This information consisted of “names, nicknames,
phone numbers, residences utilized by the drug traffickers and information regarding specific
drug transactions.” But the affidavit gives no explanation as to what information the informant
provided relating to Christian specifically. Nor does it suggest that Christian was in cahoots with
the other alleged drug traffickers so as to imply his involvement in an extensive and organized
network.

       This vague and conclusory reference to Christian as a drug trafficker is insufficient.
“A magistrate . . . must base determination of probable cause on sufficient information for the
exercise of independent judgment rather than merely ratifying the bare conclusions of others.”
United States v. Hoover, 755 F.2d 933, *2 (6th Cir. 1985) (unpublished table decision); see also
United States v. Gaston, 16 F. App’x 375, 378–79 (6th Cir. 2001) (“It is not enough that the
police officer have probable cause to believe that the things to be seized may be found in the
premises to be searched, or that the police officer present to the magistrate a conclusory
statement that probable cause exists; the officer must present to a neutral magistrate sufficient
facts to permit the magistrate to make his own independent judgment that there is probable
cause.”).

       Here, the four corners of the affidavit reflect only a single purchase from a reliable
informant eight months before the search and no other credible evidence of drug activity beyond
 No. 17-1799                       United States v. Christian                           Page 15


four prior drug convictions ranging from 4 to 19 years old (the significance of these drug
convictions for the probable-cause determination will be discussed in further detail below). We
therefore conclude that the affidavit does not establish that Christian was engaged in protracted
and continuous drug trafficking. Cf. United States v. Sinclair, 631 F. App’x 344, 348 (6th Cir.
2015) (evaluating the staleness factors and concluding that the crime at issue was “an ongoing
drug trafficking conspiracy” when a confidential informant reported purchasing heroin from the
defendant “for several years,” and the officers observed the defendant engaging in activity
consistent with drug trafficking over the most recent 12 months, with the last observation
occurring just 15 days before the search warrant was executed at the defendant’s residence);
United States v. Greene, 250 F.3d 471, 481 (6th Cir. 2001) (finding protracted and continuous
drug trafficking where a reliable confidential informant reported purchasing drugs from the
defendant at his residence at least 12 times, the last purchase occurring 23 months before the
search warrant executed, because the informant also stated that a package was sent from the
residence to a known drug dealer less than one month prior to the execution of the warrant).

                      c. Third factor

       With regard to the third Spikes factor—whether the evidence to be seized is of enduring
utility to the holder—the government contends that the warrant sought not only controlled
substances, but also records of drug trafficking and firearms used in drug trafficking. These
latter two categories of evidence, it argues, are likely to endure, even if controlled substances
themselves are not. To support this argument, the government relies on United States v. Burney,
778 F.3d 536 (6th Cir. 2015). But Burney is distinguishable from the present case because there
was no dispute that the 17-page affidavit in Burney provided sufficient evidence that the property
had been used as a stash house for “a large-scale drug trafficking and money laundering
operation— . . . a regenerating, enduring criminal enterprise that bears no resemblance to a
‘chance encounter in the night.’” Id. at 538, 541–42. Such an extensive operation was likely to
involve “scales, weapons, safes, bagging materials, and the like,” evidence that was “not readily
consumable” and thus unlikely to “be consumed or to disappear.” Id. at 541.

       In his affidavit in the present case, Officer Bush acknowledged the distinction between
those who occasionally sell from their own supply—and thus produce little lasting evidence—
 No. 17-1799                         United States v. Christian                          Page 16


and those who sell regularly for profit using extensive networks that likely involve durable
evidence like records and firearms. Although Officer Bush stated in the affidavit that he was
seeking records and firearms related to extensive drug-trafficking operations, this statement
assumes what the affidavit tried and failed to prove by substantial evidence—that Christian was
engaged in organized and extensive drug-trafficking operations likely to involve not only
controlled substances, but also records and firearms.

       Because the government has provided credible evidence of just one sale of an unknown
quantity of a controlled substance in January 2015, rather than “a large-scale drug trafficking and
money laundering operation,” it failed to provide a reason to believe that records of drug
trafficking and firearms would be found at the Residence. Whether those types of evidence are
durable is thus irrelevant. And “‘because drugs are usually sold and consumed in a prompt
fashion[,]’” evidence of a single drug sale became stale “very quickly” and well before the
search was executed eight months later. See United States v. Abernanthy, 843 F.3d 243, 250 (6th
Cir. 2016) (quoting Brooks, 594 F.3d at 493); see also Hython, 443 F.3d at 486 (noting the
limited evidentiary value of an undated controlled buy absent evidence of any recent drug
activity at the residence). Consequently, we find that the third factor weighs in favor of finding
the evidence of the controlled buy to be stale.

                       d.      Conclusion on staleness

       The first and third Spikes factors control the determination of whether evidence of the
controlled buy is stale in this case. Although Christian is entrenched in the community and his
residence would be a secure base of operations, the key question is whether evidence of drug
activity would be found there at the time of the search. With no reliable evidence of continuous
and protracted drug activity, the eight-month-old controlled buy was stale.

       This court’s decision in United States v. Brooks, 594 F.3d 488 (6th Cir. 2010), offers
strong support for our conclusion. Brooks considered whether an affidavit was sufficient to
establish probable cause to search the defendant’s residence for evidence of drug crimes.
Crucially, the affiant-officer arrested the defendant for aggravated drug trafficking at the
defendant’s residence and, in the process, smelled marijuana and observed marijuana seeds in
 No. 17-1799                          United States v. Christian                            Page 17


plain view, as well as found $1,000 in cash on the defendant after conducting a pat-down search.
Later that day, the affiant-officer executed the affidavit in support of the search warrant. On
review, this court held that the officer’s observations alone were sufficient to support probable
cause. Id. at 495.

          But the affidavit in Brooks also contained several other pieces of information that by
themselves would not, according to the court, have established probable cause. These were:
(1) four tips from confidential informants, stating that the defendant was trafficking in cocaine,
with the tips ranging from one to five years old at the time that the affidavit was executed; (2) a
six-month-old tip from a confidential informant, stating that the defendant was selling cocaine
from his residence; and (3) two controlled buys made by a confidential informant six months
before the affidavit was executed. The court noted that

          there is no question but that this information is stale for purposes of establishing
          probable cause in its own right. All of the information is regarding drug
          transactions that took place, at the most recent, approximately six months prior to
          the date of the affidavit. Given the mobile and quickly consumable nature of
          narcotics, evidence of drug sales or purchases loses its freshness extremely
          quickly.

Id. at 493 n.4.        Similarly, the single controlled buy conducted in the present case was
undoubtedly stale when the warrant was executed eight months later. Cf. United States v. Yates,
501 F. App’x 505, 511 (6th Cir. 2012) (concluding that evidence of a single drug transaction
occurring at a residence was not stale when the transaction occurred within ten days of the
affidavit’s execution); United States v. Pinson, 321 F.3d 558, 565 (6th Cir. 2003) (noting that
evidence of a single controlled purchase was not stale when the warrant was issued three days
later).

                 iv.     Criminal history

          Although “a person’s criminal record [demonstrating multiple drug offenses] alone does
not justify a search of his or her home[,]” United States v. Payne, 181 F.3d 781, 790–91 (6th
Cir. 1999), it is relevant to the probable-cause inquiry, United States v. Berry, 565 F.3d 332, 339
(6th Cir. 2009). Here, the affidavit asserts that Christian, at the time that the warrant was issued,
had a 19-year-old conviction for possession of less than 25 grams of cocaine and a 13-year-old
 No. 17-1799                         United States v. Christian                            Page 18


conviction for an unspecified second controlled-substance offense. Christian has an additional
six-year-old conviction for delivery/manufacture of marijuana and a four-year-old conviction for
delivery/manufacture of cocaine.

       Whether these convictions can support a conclusion that Christian was engaged, at some
point, in protracted drug activity is problematic. Precedent instructs us to consider “[t]he relative
recency of a set of actions and their relative closeness in time to each other.” United States v.
Perry, 864 F.3d 412, 415 (6th Cir. 2017). These convictions are each several years apart and
even the most recent conviction predates the controlled buy by four years. Nothing about these
old convictions and the controlled buy in January 2015 is inconsistent with a conclusion that
Christian was simply “effectuat[ing] the occasional sale from his or her personal holdings of
drugs to known acquaintances.” See United States v. Hython, 443 F.3d 480, 485 (6th Cir. 2006).

       But even assuming that these convictions, combined with the fact that two search
warrants were executed at the Residence in 2009 and 2011, support a conclusion that Christian
was engaged in protracted drug sales at the Residence at some point, there is no evidence to
suggest that these sales were continuous at the time the warrant was sought and executed in
September 2015. See United States v. Helton, 314 F.3d 812, 822 (6th Cir. 2003) (noting that
even where “the likely duration of th[e] evidence is long,” evidence may still be stale if enough
time has passed between the tip and execution of the warrant, and expressing concern about the
staleness of a two-month-old tip that stacks of money were being stored in a residence); United
States v. Brown, 828 F.3d 375, 384 n.3 (6th Cir. 2016) (concluding that a 12-year-old conviction
for conspiracy to distribute marijuana was insufficient to establish that an individual was a
known drug dealer at the time the warrant was executed).

       The key issue is whether a search-warrant affidavit establishes a fair probability that the
evidence sought will be found at the place identified at the time the warrant is executed. Hython,
443 F.3d at 485. Emphasizing the temporal requirement of this test, this court found in Hython
that “[e]ven had the affidavit stated that from time out of mind, [the residence to be searched]
had been a notorious drug den, some recent information would be necessary to eliminate the
possibility that a transfer in ownership or a cessation of illegal activity had not taken place.” Id.
at 486; see also United States v. McPhearson, 469 F.3d 518, 524 (6th Cir. 2006) (concluding that
 No. 17-1799                         United States v. Christian                            Page 19


the magistrate may “draw the inference that evidence of wrongdoing would be found in the
defendants’ homes” when the affidavit reflects “the independently corroborated fact that the
defendants were known drug dealers at the time the police sought to search their homes”).

       The government has identified no case where a record of past drug convictions, without
recent credible evidence of drug activity, was sufficient to establish that a defendant was
engaged in protracted and continuous drug activity. Rather, this court has generally relied on
past drug convictions in combination with a defendant’s recent drug activity in applying the
principle that, “[i]n the case of drug dealers, evidence is likely to be found where the dealers
live.” United States v. White, 874 F.3d 490, 501 (6th Cir. 2017) (quoting United States v. Jones,
159 F.3d 969, 975 (6th Cir. 1998)); see also United States v. Newton, 389 F.3d 631, 636 (6th Cir.
2004) (noting that, “with continuing criminal operations . . . [,] the lack of a direct known link
between the criminal activity and the residence” is inconsequential), vacated on other grounds,
546 U.S. 803 (2005); see also White, 874 F.3d at 494, 498 (finding that the defendant’s
“‘numerous’ drug convictions[] len[t] further credence” to an informant’s recent tip that the
defendant was selling narcotics from his residence, and concluding that a controlled buy
conducted in a car in the driveway of the residence within the last 72 hours “was not an
aberration”); United States v. Miggins, 302 F.3d 384, 393 (6th Cir. 2002) (finding probable cause
to search the defendant’s residence where his criminal record indicated that he had been
convicted of cocaine charges and officers observed him signing for a package of cocaine
delivered at a second location immediately before the issuance of the warrant).

       Absent additional recent reliable evidence, then, old criminal convictions cannot support
a finding that drug activity is continuous at the time of the search. Our legal system has long
developed a strong policy against using propensity evidence to suggest an inference that an
individual who has once committed a crime continues to engage in criminal activity. See Fed. R.
Evid. 404(b)(1) (“Evidence of a crime, wrong, or other act is not admissible to prove a person’s
character in order to show that on a particular occasion the person acted in accordance with the
character.”). Although the Federal Rules of Evidence do not come into play when deciding the
validity of a search warrant, the aim of Rule 404 is similar to the purpose of the staleness rule: to
ensure that decisionmakers—whether jurors or magistrates—do not improperly assume based on
 No. 17-1799                        United States v. Christian                           Page 20


past wrongs that an individual engaged in the specific criminal conduct at issue. See Old Chief v.
United States, 519 U.S. 172, 179–82 (1997) (discussing the prejudicial nature of propensity
evidence).

       We thus conclude that Christian’s prior criminal convictions, even considered with the
eight-month-old controlled buy, do not establish that he was engaged in protracted and
continuous drug activity. And absent some “independently corroborated fact that the defendant[]
w[as a] known drug dealer[] at the time the police sought to search [his] home,” probable cause
did not exist to search the Residence based on Christian’s criminal record. See McPhearson,
469 F.3d at 524.

               v.     Totality of the circumstances

       As discussed above, the caselaw makes clear that the probable-cause determination must
be based on the “totality of the circumstances.” United States v. Williams, 544 F.3d 683, 686
(6th Cir. 2008). We thus evaluate the weight of the evidence when considered as a whole.

       First, “[w]here recent information corroborates otherwise stale information, probable
cause may be found.” United States v. Spikes, 158 F.3d 913, 924 (6th Cir. 1998) (quoting United
States v. Henson, 848 F.2d 1374, 1381–82 (6th Cir. 1988)), and concluding that evidence of drug
residue in a residence’s trash cans and an officer’s recent observations of individuals leaving the
residence to sell drugs nearby “refreshed . . . otherwise stale information” contained in the
affidavit). But for the reasons discussed above, no reliable evidence corroborates the stale
evidence in the affidavit under review.

       Alternatively, evidence from an informant whose reliability is not known can be
corroborated by independent information from police officers. McPhearson, 469 F.3d at 524
n.3; United States v. Hammond, 351 F.3d 765, 772 (6th Cir. 2003) (noting the “minimal
probative value” of a tip from an informant of unknown reliability, but concluding that “the tip
can take on an increased level of significance for probable cause purposes, if corroborated by the
police through subsequent investigation”). But, as discussed above, there is no evidence that the
officers here attempted to corroborate the information provided by the unidentified subjects.
And even if the previous controlled buy could be considered to corroborate subsequent
 No. 17-1799                        United States v. Christian                          Page 21


information from unidentified sources, the single buy did not corroborate allegations that
protracted and continuous drug activity was occurring at the Residence.

       In sum, the affidavit shows that (1) search warrants were executed for drugs at the
Residence in the past, (2) Christian has a history of years’ old drug convictions, (3) he engaged
in one sale of drugs at the Residence eight months prior to the execution of the search warrant,
(4) unidentified subjects of unknown reliability reported that Christian was selling drugs in the
more recent past, and (5) a man with no known connection to Christian was found to be in
possession of drugs after leaving “the area” of the Residence on the date of the search-warrant
affidavit. This evidence, even when considered cumulatively, fails to establish “fair probability”
that drug activity was occurring at the Residence at the time the search warrant was executed.
See United States v. Brooks, 594 F.3d 488, 492 (6th Cir. 2010).

       The dissent’s conclusory statement to the contrary fails to explain how the individual
pieces of evidence corroborate one another. Moreover, the dissent fails to analogize the facts of
this case to those of any of our prior cases that have found a warrant supported by probable
cause. It instead argues that United States v. Hines, 885 F.3d 919 (6th Cir. 2018), “compel[s]” us
to conclude that probable cause existed to search Christian’s home because Hines makes clear
that courts must consider the unique mix of evidence in each affidavit to determine if it
established probable cause. Dissent Op. 37. See Hines 885 F.3d at 921–22 (“Not all search
warrant affidavits include the same ingredients. It is the mix that courts review to decide
whether evidence generated from the search may be used or must be suppressed.”). But the facts
of Hines actually lend further support for our position that the warrant here did not establish
probable cause to search the Residence.

       The affidavit at issue in Hines contained the following evidence in support of a warrant to
search a home: (1) a reliable confidential informant told officers five months prior to the
warrant’s execution that the defendant was selling large amounts of heroin from the home; (2) a
statement from the same informant that he had seen heroin at the home the day before the search;
(3) several months of surveillance of the home by law-enforcement officers showing the
defendant’s comings and goings; (4) a tip from a second reliable confidential informant the day
before the warrant’s execution stating that he was meeting the defendant at a nearby club to
 No. 17-1799                           United States v. Christian                            Page 22


discuss an incoming heroin shipment; (5) officers’ observations of the defendant driving “in a
manner consistent with narcotics traffickers” to the club at the designated time; (6) statements
from the second informant that he had received heroin from the defendant numerous times and
was always instructed to meet him at the home to receive that heroin; (7) a tip from the second
informant that he was instructed to collect heroin from the defendant at the home on the day that
the warrant was executed; (8) three-year-old wiretaps identifying the defendant as a significant
heroin trafficker; and (9) the two-year-old seizure of $33,500 from a third individual outside the
home (believed to be payment from Hines for a kilogram of cocaine) and a subsequent statement
from this individual that he had previously provided the defendant with heroin and cocaine. Id.
at 922.

          The evidence detailed above in Hines directly linked the residence to heroin trafficking at
the time of the search through information from reliable informants and specific observations by
officers that corroborated the information provided by those informants. And after comparing
this evidence with that used to support affidavits in other cases, the court in Hines ultimately
concluded that the affidavit at least satisfied the Leon good-faith standard, if not probable cause.
Id. at 924–28.

          For the reasons already discussed, the affidavit at issue here fails to establish more than a
speculative connection between drug activity and the Residence at the time of the search. Unlike
the affidavit in Hines, it contains no recent reliable evidence of drug activity at the Residence.
The search warrant, accordingly, was not supported by probable cause.                    Under these
circumstances, the deference that would otherwise be due the issuing magistrate is unjustified.
See United States v. Leon, 468 U.S. 897, 914 (1984) (“Deference to the magistrate . . . is not
boundless.”); Massachusetts v. Upton, 466 U.S. 727, 733 (1984) (noting that we apply a
“deferential standard of review” to an issuing magistrate’s probable-cause determination, but that
the determination will not be upheld if the evidence, viewed as a whole, does not provide a
“substantial basis” for that determination).
 No. 17-1799                         United States v. Christian                          Page 23


          3.     Leon good-faith exception

          “Though evidence obtained in violation of the Fourth Amendment is generally excluded,
the Supreme Court has held that the exclusionary rule ‘should be modified so as not to bar the
admission of evidence seized in reasonable, good-faith reliance on a search warrant that is
subsequently held to be defective.’” United States v. Frazier, 423 F.3d 526, 533 (6th Cir. 2005)
(quoting Leon, 468 U.S. at 905). Under the Leon good-faith standard, suppression should be
limited to “circumstances in which the benefits of police deterrence outweigh the heavy costs of
excluding ‘inherently trustworthy tangible evidence’ from the jury’s consideration.” United
States v. White, 874 F.3d 490, 496 (6th Cir. 2017) (quoting Leon, 468 U.S. at 907). The test is
“whether a reasonably well trained officer would have known that the search was illegal despite
the magistrate’s decision.” Id. (quoting United States v. Hodson, 543 F.3d 286, 293 (6th Cir.
2008)).

          Four situations have been identified by the Supreme Court in which an officer could not
reasonably believe that a search was valid, despite the issuance of a warrant. See United States v.
Laughton, 409 F.3d 744, 748 (6th Cir. 2005) (citing Leon, 468 U.S. at 914–23). Christian argues
that the third situation is present in this case—that the affidavit was “so lacking in indicia of
probable cause that a belief in its existence is objectively unreasonable.” Id. Such a “bare bones
affidavit is one that merely ‘states suspicions, beliefs, or conclusions, without providing some
underlying factual circumstances regarding veracity, reliability, and basis of knowledge.’”
McPhearson, 469 F.3d at 526.

          Determining whether an affidavit is more than “bare bones” is a “less demanding
inquiry” than the inquiry into whether the magistrate had a substantial basis for concluding that
an affidavit reflected probable cause. Id. The good-faith exception requires only “a minimally
sufficient nexus between the illegal activity and the place to be searched” at the time of the
warrant’s execution. United States v. Brown, 828 F.3d 375, 385 (6th Cir. 2016) (quoting United
States v. Carpenter, 360 F.3d 591, 596 (6th Cir. 2004) (en banc)). But the affidavit must contain
some “particularized facts that indicate veracity, reliability, and basis of knowledge and go
beyond bare conclusions and suppositions.” McPhearson, 469 F.3d at 526. Although the Leon
good-faith exception does not assume that the reasonable officer has “extraordinary legal
 No. 17-1799                        United States v. Christian                              Page 24


training,” United States v. Van Shutters, 163 F.3d 331, 337 (6th Cir. 1998), it does “require[]
officers to have a reasonable knowledge of what the law prohibits,” Leon, 468 U.S. at 919.
Whether the good-faith standard is met is a close call in this case, but ultimately we conclude
that the affidavit falls short because it does not provide any “particularized facts” connecting the
Residence to drug activity at the time that the search warrant was executed.

       This court’s analysis in United States v. Hython, 443 F.3d 480 (6th Cir. 2006), is
particularly persuasive on this issue. In that case, the affidavit contained information that the
officers had, at some unidentified point, conducted a controlled buy of crack cocaine at the
residence to be searched. The court found that evidence of a single controlled buy at the
residence was consistent with the situation “where an individual occasionally sells drugs to
acquaintances out of his or her personal holdings.” Id. At 486. And because “the affidavit
include[d] no observation of deliveries to the address, no monitoring of the frequency or volume
of visitors to the house, no second controlled buy, [and] no further surveillance whatsoever,”
“the affidavit [wa]s patently insufficient” so that no reasonable officer could have believed that
the affidavit established probable cause to search the residence. Id. At 486, 488–89.

       Similarly, the affidavit in this case primarily relies on a single stale controlled buy to link
the Residence to drug activity at the time of the search. It does not provide any credible
evidence that drug activity continued at the Residence in the interim, and the single instance of
contemporary surveillance did not link the Residence to drug activity by anything more than
speculation that Thomas purchased drugs at the Residence on September 3, 2015.

       This court has also held that the Leon good-faith standard was not satisfied where “the
‘evidence in the affidavit connecting the crime to the residence [wa]s so vague as to be
conclusory or meaningless.’” McPhearson, 469 F.3d at 527 (quoting United States v. Frazier,
423 F.3d 526, 537 (6th Cir. 2005)) (finding that the Leon standard was not satisfied where the
affidavit reflected that officers had arrested the defendant at his residence on an assault charge
and found him in possession of cocaine, but where there was no evidence connecting the
defendant or his residence to drug trafficking). It has further concluded that an affidavit did not
meet the Leon standard where the facts it contained were so inconclusive that they did not “draw
some plausible connection” between alleged drug activity and the residence to be searched.
 No. 17-1799                        United States v. Christian                            Page 25


See, e.g., Brown, 828 F.3d at 384, 385–86 (holding that the Leon good-faith standard was not
satisfied where the affidavit indicated that the defendant was arrested for attempting to deliver
heroin 21 days prior to the search, a drug dog had alerted to the odor of narcotics in the
defendant’s car, the defendant exchanged text messages discussing drug prices, and the
defendant had a 12-year-old conviction for conspiracy to distribute marijuana).

       In contrast, this court has held an affidavit insufficient to show probable cause to search a
residence but sufficient to satisfy the Leon good-faith standard where the affidavit provided some
link between the criminal activity alleged and the residence to be searched at the time of the
search. See United States v. White, 874 F.3d 490, 494, 498 (6th Cir. 2017) (finding the Leon
good-faith standard satisfied where the affiant stated that officers received a tip that the
defendant, who had an extensive criminal history involving drugs, was selling drugs from his
residence, and the officers initiated, observed, and recorded a controlled buy from the defendant
in the driveway of the residence less than 72 hours before the affidavit was executed); United
States v. Higgins, 557 F.3d 381, 391 (6th Cir. 2009) (concluding that the affidavit met the Leon
good-faith standard where it stated that a named informant told officers that he had purchased
drugs from the defendant’s residence earlier that day, even though there were questions about the
informant’s reliability); Frazier, 423 F.3d at 536 (finding the Leon good-faith standard satisfied
when the affidavit reflected that two recorded controlled buys were conducted by an informant at
the defendant’s previous residence seven months before the search, that drugs were found at the
defendant’s previous residence two months before the search, that a named informant reported
buying two pounds of marijuana from the defendant weekly, and that phone records showed that
the defendant was in constant contact with known drug dealers); Carpenter, 360 F.3d at 593
(finding the Leon standard satisfied where the affidavit supporting a warrant to search the
residence alleged that a police officer conducting an aerial search spotted numerous marijuana
plants connected by a road directly to the residence).

       Contrary to the affidavit evidence considered in White, Higgins, Frazier, and Carpenter,
Christian’s criminal history and the January 2015 controlled buy do not establish a nexus
between the Residence and drug activity at the time of the search. This nexus is required for the
Leon good-faith exception to apply. See Hython, 443 F.3d at 488–89.
 No. 17-1799                         United States v. Christian                          Page 26


       And although closer in time to the execution of the search, the information received from
the unidentified subjects indicating that Christian was engaged in large-scale drug trafficking
from the Residence was “so vague as to be conclusory or meaningless.” See Frazier, 423 F.3d at
536 (quoting Carpenter, 360 F.3d at 596). Where statements “are heavily discounted due to their
minimal trustworthiness and reliability, they add little to the probable cause determination” and,
accordingly, “a reasonable officer would recognize that without more corroboration, the . . .
affidavit came well short of establishing probable cause.” United States v. Helton, 314 F.3d 812,
825 (6th Cir. 2003).

       An investigation by law enforcement can corroborate tips of unknown reliability. But the
observation of Thomas “walk[ing] away from the area” of the Residence before he was later
found with heroin in his vehicle does not provide this additional corroboration. At best, it allows
for only speculation that Thomas purchased the drugs from the Residence. Such speculation
cannot reasonably be thought to support a finding of probable cause. See White, 874 F.3d at 498
(noting that a barebones affidavit is one that contains “a mere affirmation of suspicion and belief
without any statement of adequate supporting facts” (quoting Nathanson v. United States,
290 U.S. 41, 46 (1933))). As a result, we conclude that no reasonable officer would have
believed that the affidavit established probable cause to search the Residence at the time the
affidavit was executed.

       We believe that our conclusion is in line with the policy behind the Leon good-faith
exception to the exclusionary rule.       A reasonable officer understands that allegations of
protracted and continuous drug activity must be supported by information from informants
whose reliability, veracity, and basis of knowledge have been shown. If no such credible
information exists, the allegations must be corroborated by independent investigation by law-
enforcement officers. Here, the police failed to provide the necessary corroboration. There is no
evidence in the affidavit that they engaged in ongoing or repeated surveillance, arranged
subsequent controlled buys, or otherwise monitored for “hallmarks of drug dealing” at the
Residence. See United States v. McPhearson, 469 F.3d 518, 527 (6th Cir. 2006); Hython,
443 F.3d at 486, 488–89. By suppressing the evidence in this case, we will incentivize the police
to take such corroborative action in the future.
 No. 17-1799                          United States v. Christian                         Page 27


B.     The district court erred in admitting the recorded telephone call because it
       constituted inadmissible hearsay.

       Christian also challenges the district court’s decision to admit a recorded telephone call
between Thomas and Thomas’s girlfriend, Tanisha Edwards, arguing that the conversation was
inadmissible hearsay. The government contends that the district court properly admitted the
conversation under Rule 801(d)(2)(E) of the Federal Rules of Evidence as the statement of a
coconspirator.

       1.        Standard of review

       Rule 801(d)(2)(E) excludes from the definition of hearsay a statement offered against an
opposing party when it is “made by the party’s coconspirator during and in furtherance of the
conspiracy.” In order for an out-of-court statement offered for the truth of the matter asserted to
be admitted under this section, the government must show by a preponderance of the evidence
that (1) a conspiracy existed, (2) the defendant against whom the statement is admitted was a
member of the conspiracy, and (3) that the statement was made in the course and in furtherance
of the conspiracy. United States v. Martinez, 430 F.3d 317, 325 (6th Cir. 2005). “These
findings, often called Enright findings, must be made by the district court.” Id. (citing United
States v. Enright, 579 F.2d 980, 986–87 (6th Cir. 1978)).

       Determining whether each of the three requirements was satisfied is a question of fact
that we review under the clear-error standard. United States v. Warman, 578 F.3d 320, 335 (6th
Cir. 2009). But the ultimate decision to admit evidence under Rule 801(d)(2)(E) is reviewed to
determine whether the district court abused its discretion. Martinez, 430 F.3d at 326. “A district
court abuses its discretion when it applies the incorrect legal standard, misapplies the correct
legal standard, or relies upon clearly erroneous findings of fact.” Id. (quoting United States v.
Pugh, 405 F.3d 390, 397 (6th Cir. 2005)). This court has repeatedly emphasized its “preference
for specific Enright findings,” id. at 328, but it has not “mandated a particular degree of
specificity,” United States v. Kone, 307 F.3d 430, 441 (6th Cir. 2002).

       So although a complete failure to make Enright findings is undoubtedly an abuse of
discretion, United States v. Mahar, 801 F.2d 1477, 1495 (6th Cir. 2007), we may conclude that a
 No. 17-1799                        United States v. Christian                           Page 28


district court’s finding relating to an individual Enright requirement was implicit, Martinez,
430 F.3d at 327–28. “[C]onclusory [Enright] findings[, moreover,] have been upheld when the
court could conclude with confidence that the government had met its burden.” Id. at 328;
cf. Kone, 307 F.3d at 441 (noting that “‘a mere conclusory statement will not always suffice’
when the government has not met its burden of proof” (quoting United States v. Curro, 847 F.2d
325, 329 (6th Cir. 1988))).

       If the appellate court concludes that the district court abused its discretion, it must then
determine whether that error was harmless. Kone, 307 F.3d at 436–37. “[W]e do not reverse a
conviction if the error is harmless, meaning that ‘it appears beyond a reasonable doubt that the
error complained of did not contribute to the verdict obtained.’” United States v. Kelsor, 665
F.3d 684, 696 (6th Cir. 2011) (quoting United States v. Lopez-Medina, 461 F.3d 724, 741 (6th
Cir. 2006)).

       2.      Enright findings

       The telephone call at issue occurred while Thomas was in jail, after he had been arrested
by the police for possession of heroin. At trial, the government noted that Edwards called
Thomas in jail, and it summarized the call as follows:

       Rueben Thomas is told by Tanisha Edwards that he ought to be more grateful to
       Mr. Christian . . . for helping him because Christian came and got the “groceries”
       out of the house. Edwards is going to say that when she said “groceries” she
       meant the gun and what she assumed to be drugs that she took out of there.

       The government conceded that it did not “have any evidence that Tanisha Edwards was
involved in drug trafficking herself.” It instead contended that Christian and Edwards were
participating in an uncharged “obstruction-of-justice conspiracy.” According to this theory,
Christian and Edwards conspired to remove evidence of drug trafficking from Thomas’s home.

       Although the government contends that the district court properly applied the Enright test
when admitting the recorded call, it appears to concede that the court did not make specific
findings regarding the final factor: whether Edwards’s statement was made in the course of and
in furtherance of the conspiracy. A review of the trial transcript shows that the court’s Enright
analysis was focused solely on the first two factors—the existence of a conspiracy and the
 No. 17-1799                         United States v. Christian                           Page 29


membership of Christian and Edwards in that conspiracy. The court’s failure to address the final
Enright factor, however, does not constitute an abuse of discretion if the record is otherwise clear
that the government met its burden with respect to that factor. We conclude that the government
has not done so.

         “A statement is considered to be in furtherance of the conspiracy ‘if it is intended to
promote the objectives of the conspiracy.’” United States v. Darwich, 337 F.3d 645, 657 (6th
Cir. 2003) (quoting United States v. Monus, 128 F.3d 376, 392 (6th Cir.1997)). “Whether a
statement was in furtherance of a conspiracy turns on the context in which it was made and the
intent of the declarant in making it.” United States v. Warman, 578 F.3d 320, 338 (6th Cir.
2009).    “[M]ere idle chatter or casual conversation about past events is not considered a
statement in furtherance of the conspiracy.” United States v. Conrad, 507 F.3d 424, 430 (6th
Cir. 2007) (quoting Darwich, 337 F.3d at 657).

         If, as the government contended at trial, the conspiracy was one “to remove incriminating
evidence from Thomas’s home so that Thomas could avoid further legal problems,” then the aim
of the conspiracy had already been accomplished at the time of the call. “A conspiracy is
completed when the intended purpose of the conspiracy is accomplished.” United States v.
Mayes, 512 F.2d 637, 642 (6th Cir. 1975). Edwards’s statement was not made, therefore, in the
course of and in furtherance of the conspiracy. See Conrad, 507 F.3d at 430 (“[O]ut-of-court
statements made after the conclusion of the conspiracy are not made ‘in furtherance of the
conspiracy,’ and are thus not admissible under the co-conspirator exception.” (emphasis in
original)). Rather, the statement appeared to be commentary about past events, intended only to
inform Thomas of what had happened but not to induce his participation in the alleged
conspiracy.

         The government now attempts to argue that, despite its own characterization of the
conspiracy as one “to remove incriminating evidence,” the conspiracy was actually broader in
scope: “It was not simply to hide evidence. It was to keep Thomas quiet and continue the drug
trafficking scheme.” But the government did not argue for such a broad definition of the
conspiracy at the trial level. Nor has it identified any evidence indicating that Edwards intended
to “keep Thomas quiet” or linking Edwards to an agreement to engage in drug trafficking. The
 No. 17-1799                          United States v. Christian                        Page 30


district court, moreover, never explicitly identified the scope or aim of the conspiracy in which
Christian and Edwards were allegedly involved, implying that it agreed with the narrower scope of
the conspiracy as identified by the government at trial.

        Christian also raises a question of whether the alleged conspiracy—a conspiracy to
remove incriminating evidence from Thomas’s home and thus to obstruct justice—is a
conspiracy that qualifies a statement for admission pursuant to Rule 801(d)(2)(E). As the
Supreme Court has explained:

        [A]fter the central criminal purposes of a conspiracy have been attained, a
        subsidiary conspiracy to conceal may not be implied from circumstantial evidence
        showing merely that the conspiracy was kept a secret and that the conspirators
        took care to cover up their crime in order to escape detection and punishment. As
        was there stated, allowing such a conspiracy to conceal to be inferred or implied
        from mere overt acts of concealment would result in a great widening of the scope
        of conspiracy prosecutions, since it would extend the life of a conspiracy
        indefinitely. Acts of covering up, even though done in the context of a mutually
        understood need for secrecy, cannot themselves constitute proof that concealment
        of the crime after its commission was part of the initial agreement among the
        conspirators. For every conspiracy is by its very nature secret; a case can hardly
        be supposed where men concert together for crime and advertise their purpose to
        the world. And again, every conspiracy will inevitably be followed by actions
        taken to cover the conspirators’ traces. Sanctioning the Government’s theory
        would for all practical purposes wipe out the statute of limitations in conspiracy
        cases, as well as extend indefinitely the time within which hearsay declarations
        will bind co-conspirators.

Grunewald v. United States, 353 U.S. 391, 401–02 (1957); see also Krulewitch v. United States,
336 U.S. 440, 444 (1949).

        This court has recognized that Grunewald establishes that “an agreement to conceal a
completed crime does not extend the life of the conspiracy,” and that the Supreme Court rejected
“the notion that after the central objectives of a criminal conspiracy have succeeded or failed, a
subsidiary phase of the conspiracy, which has the conspiracy’s concealment as its sole objective,
always survives.”     United States v. Howard, 770 F.2d 57, 60 (6th Cir. 1985).         But “[i]n
conspiracies where a main objective has not been attained or abandoned and concealment is
essential to success of that objective, attempts to conceal the conspiracy are made in furtherance
of the conspiracy.” United States v. Gardiner, 463 F.3d 445, 463 (6th Cir. 2006) (quoting
 No. 17-1799                         United States v. Christian                          Page 31


Howard, 770 F.2d at 61); cf. United States v. Etheridge, 424 F.2d 951, 964 (6th Cir. 1970) (“If
the central object of the conspiracy has been accomplished, evidence of subsequent events
designed to conceal that accomplishment cannot be presented under the theory that there was an
implied conspiracy to conceal the completed crime.”).

       Because the government concedes that Edwards was not a party to any drug-trafficking
conspiracy, any question of whether the concealment was intended to further Christian’s alleged
drug trafficking is irrelevant. Nor need we address whether an alleged conspiracy to conceal
evidence is the type of conspiracy that can qualify a statement for admission pursuant to
Rule 801(d)(2)(E) because, as discussed above, there is no evidence in the record that Edwards’s
statement was made in the course of and in furtherance of the alleged conspiracy to remove
evidence from Thomas’s home. We thus have no basis to “conclude with confidence” that the
government satisfied its burden as to the third Enright finding. See United States v. Martinez,
430 F.3d 317, 328 (6th Cir. 2005). In sum, the district court abused its discretion in admitting
the telephone conversation as evidence. Whether this error was harmless is moot because the
illegal search of the Residence already requires a new trial in this case.

                                       III. CONCLUSION

       The question of whether a reasonable officer could have believed that the search warrant
was supported by probable cause is a close call in this case. But this court’s relevant precedents,
including United States v. Hython, 443 F.3d 480 (6th Cir. 2006), convince us that the supporting
affidavit was simply inadequate to establish a good-faith belief in a fair probability that drugs
would be found at the Residence on the date of the search.

       True enough, the affidavit permits speculation of such drug activity. But the probable-
cause standard requires more. See United States v. Arvizu, 534 U.S. 266, 274 (2002). These
cases of legalized home invasions are not ones where the ends justify the means. The Fourth
Amendment’s goal of protecting individuals from unreasonable searches of their homes
outweighs the occasional loss of incriminating evidence obtained by overzealous law-
enforcement officers.
 No. 17-1799                      United States v. Christian                       Page 32


       For all of the reasons set forth above, we REVERSE the judgment of the district court
and REMAND the case for further proceedings consistent with this opinion.
 No. 17-1799                         United States v. Christian                            Page 33


                                        _________________

                                              DISSENT
                                        _________________

       ROGERS, Circuit Judge, dissenting.             Based on a five-page-long search-warrant
affidavit—which included evidence from a confidential informant and other sources, a controlled
buy, and direct police-officer surveillance—a neutral and detached magistrate determined that
there was probable cause to search 618 Grandville Avenue, Tyrone Christian’s home, for
evidence of drug trafficking. That search uncovered a large amount of heroin, some cocaine, and
two loaded guns. Christian argues on appeal that the search was not supported by probable cause
because each piece of evidence assertedly could not have independently authorized the search.
However, reading each piece of evidence in that way—alone and in the most uncharitable light
possible—distorts the narrow scope of our review prescribed by Illinois v. Gates, 462 U.S. 213
(1983). Such a hyper-technical, line-by-line scrutiny of each factual allegation patently violates
the common-sense, totality-of-the-circumstances approach to probable cause that multiple
precedents compel us to apply. Earlier this year the Supreme Court cautioned that “this kind of
divide-and-conquer approach” has no place in our law. District of Columbia v. Wesby, 138 S.
Ct. 577, 589 (2018). To suppress the evidence seized in reliance on the robust warrant here is to
ignore that clear admonition.

       The search-warrant affidavit at issue here provided an ample basis for probable cause,
and the question is really not even close. The affidavit first outlined Christian’s extensive history
with drugs, which included four felony drug convictions from 1996, 2002, 2009, and 2011, at
least two of which were for drug trafficking. In 2009 and 2011, search warrants executed at
Christian’s home, 618 Grandville, the same place searched here, uncovered evidence of drug
trafficking that each time resulted in Christian’s arrest.

       The affidavit next detailed the reasons why officers believed that Christian had gone back
into business. In December 2014, a “credible and reliable informant” advised Officer Bush, the
affiant, that Christian was again dealing drugs. The informant also provided information about
other traffickers, including “names, nicknames, phone numbers, residences utilized by the drug
traffickers and information regarding specific drug transactions.” Officer Bush independently
 No. 17-1799                         United States v. Christian                          Page 34


corroborated “much of the information provided” by this informant. In January 2015, under the
direction of Officer Bush, the informant executed a controlled purchase of drugs from Christian.
In addition, “[w]ithin the last four months” from the date of the search, meaning from May to
September of 2015, several other informants stated that “Tyrone Christian is a large scale drug
dealer” and that “they [had] purchased large quantities of heroin and crack cocaine from
Christian at [his residence] in the last four to five months.”

        That brings us to September 3, 2015, the day of the search, when, according to the
affidavit, officers established surveillance “at 618 Grandville Avenue.” The officers observed
Reuben Thomas “walk away from the area of 618 Grandville Avenue and leave the area in a
vehicle.” After stopping him for a traffic violation, officers found “approximately 20 grams of
heroin” in the form of “‘chunk[s]’ that appeared to have been removed from a larger portion of
heroin.” Thomas denied having been at 618 Grandville but admitted having been at another
address on that street. Crucially, the affidavit recounted that Thomas’s denial was “contrary to
the observations of the law enforcement officers.”

        Viewing the “totality of the circumstances,” Florida v. Harris, 568 U.S. 237, 244 (2013),
through the “lens of common sense,” as the Supreme Court has instructed, id. at 248, the
conclusion is inescapable: there was probable cause to believe that a search of 618 Grandville
would uncover evidence of drug trafficking. Most readers of the affidavit would have been
surprised if it did not.

        Indeed, one element of the affidavit was independently sufficient for probable cause: the
surveillance of Reuben Thomas. Christian argues that there was no “nexus” between Thomas
and 618 Grandville because the affidavit states merely that officers saw Thomas “walk away
from the area of 618 Grandville Avenue,” rather than entering or leaving that residence. But that
selective, out-of-context reading is contradicted even by other parts of the affidavit, which later
states that “Reuben Thomas . . . denied being at [the Residence], contrary to the observations of
the law enforcement officers.” (Emphasis added.) While this is not a direct statement that
Thomas was seen entering or leaving 618 Grandville, the law does not require such a direct
statement. Indeed, our precedents require us to eschew such a formal requirement. “Affidavits
are not required to use magic words.” United States v. Allen, 211 F.3d 970, 975 (6th Cir. 2000)
 No. 17-1799                        United States v. Christian                           Page 35


(en banc). Because our job is not to reweigh the assertions in an affidavit but to ask whether the
magistrate had a substantial basis for his conclusion, United States v. Perry, 864 F.3d 412, 415
(6th Cir. 2017), the latter phrase in the affidavit cannot be read out of existence. Rather, the
deferential nature of our review means that we should take that latter statement—i.e., that
Thomas’s denying that he was at 618 Grandville was “contrary to the observations of the law
enforcement officers”—to reconcile any doubt about where the officers saw Thomas walk away
from.

        Under that proper view of the affidavit, and paying the appropriate “great deference” to
the magistrate’s probable-cause determination, Gates, 462 U.S. at 236, the surveillance evidence
provided a substantial basis for concluding that probable cause existed.        Argument to the
contrary is unavailing. Any possible contradiction between “from the area of” and “contrary to
the observations of the officers” is more readily attributable to the “haste of a criminal
investigation” under which officers often draft an affidavit supporting a search warrant. See id.
at 235. Such haste was certainly present here: Officer Bush applied for and received the warrant
on the same day as the purportedly infirm surveillance and search. To boot, police officers are
mostly non-lawyers who must draft search-warrant affidavits “on the basis of nontechnical,
common-sense judgments.” Id. at 235–36. With the benefit of hindsight, perhaps the affiant
could have been more precise. But our precedents do not require such an exacting degree of
specificity. For example, in our recent published opinion in United States v. Tagg, 886 F.3d 579
(6th Cir. 2018), we held that probable cause existed to search the defendant’s home for child
pornography despite the supporting documents’ failure to state that the defendant had actually
clicked on or viewed an online file containing child pornography. Id. at 585–90. In doing so, we
explained that probable cause is not the same thing as proof. See id. at 589–90. Likewise, the
affidavit here need not have definitively stated that Thomas was seen leaving 618 Grandville.
Rather, it need only have “alleged facts that create a reasonable probability” that he did. See id.
From there, the remaining inferences needed to connect 618 Grandville to Christian’s drug
trafficking are quite straightforward, given Christian’s history of dealing drugs from that address
and the officers’ finding heroin on Thomas. Under a common-sense reading of the affidavit,
then, its description of the 618 Grandville surveillance easily exceeds the “degree of suspicion,”
id. at 586, needed to establish probable cause.
 No. 17-1799                        United States v. Christian                           Page 36


       Moreover, the officers who saw Thomas were assigned to “establish[] [surveillance] at
618 Grandville Avenue,” not the entire area around it. Assuming those officers were doing their
jobs, the fact that they saw Thomas at all probably means that he was very near 618 Grandville.
At the very least, that would be far from an arbitrary inference for a magistrate to draw. In
addition, the heroin found on Thomas appeared to “have been removed from a larger portion of
heroin.” These facts further supported the magistrate’s determination that there was probable
cause to believe that evidence of drug dealing would be found at 618 Grandville.

       The affidavit hardly relies alone on the Thomas surveillance, however. There is also
Christian’s lengthy history of dealing drugs from 618 Grandville, the controlled purchase from
618 Grandville, and the numerous tips that Christian was dealing large quantities of drugs from
618 Grandville, all of which provide further evidence still that probable cause existed. When it
comes to probable cause, “the whole is often greater than the sum of its parts—especially when
the parts are viewed in isolation.” Wesby, 138 S. Ct. at 588 (citing United States v. Arvizu,
534 U.S. 266, 277–278 (2002)). Even if each of these additional items would not suffice to
establish probable cause on its own, each factual allegation is still a relevant data point in the
“totality of the circumstances” constellation, rather than an independent thing to be lined up and
shot down one by one. As in Wesby, where the Supreme Court firmly repudiated the Court of
Appeals’ attempt to isolate and explain away each piece of evidence, here too “the totality of the
circumstances gave the officers plenty of reasons,” 138 S. Ct. at 589, to believe that there was
evidence of drug trafficking in Christian’s home.

       Probable cause therefore existed, and it is not a close call. The opposite conclusion can
be reached only by engaging in the kind of “hypertechnical[,] . . . line-by-line scrutiny,” United
States v. Woosley, 361 F.3d 924, 926 (6th Cir. 2004), of the affidavit explicitly forbidden by the
Supreme Court, see Gates, 462 U.S. at 236, 246 n.14. In Wesby, the Court explained that “this
kind of divide-and-conquer approach is improper,” because “[a] factor viewed in isolation is
often more ‘readily susceptible to an innocent explanation’ than one viewed as part of a totality.”
138 S. Ct. at 589 (quoting Arvizu, 534 U.S. at 274). That is the case here too, where alone some
parts of the affidavit might be criticized but taken together they point clearly to one conclusion:
that Christian was dealing drugs from 618 Grandville.
 No. 17-1799                         United States v. Christian                             Page 37


       We are accordingly compelled to hold that there was probable cause in this case,
especially given the undemanding character of the probable-cause standard and the deferential
nature of our review. Probable cause “requires only a probability or substantial chance of
criminal activity, not an actual showing of such activity.” Tagg, 886 F.3d at 585 (quoting
Wesby, 138 S. Ct. at 586). Time and again the Supreme Court has emphasized that “[p]robable
cause ‘is not a high bar’” to clear. Wesby, 138 S. Ct. at 586 (quoting Kaley v. United States, 134
S. Ct. 1090, 1103 (2014)). Where, as here, a magistrate has issued a search warrant based on
probable cause, we “do[] not write on a blank slate.” Tagg, 886 F.3d at 586. Rather, the
magistrate’s probable-cause determination “should be paid great deference,” Gates, 462 U.S. at
236 (internal quotation marks omitted) (citing Spinelli v. United States, 393 U.S. 410, 419
(1969)), and we overturn that decision only “if the magistrate arbitrarily exercised his or her
authority,” United States v. Brown, 732 F.3d 569, 573 (6th Cir. 2013) (citing United States v.
Greene, 250 F.3d 471, 478 (6th Cir. 2001)). We are “not permitted to attempt a de novo review
of probable cause.” Tagg, 886 F.3d at 586 (citing Gates, 462 U.S. 238–39; United States v.
King, 227 F.3d 732, 739 (6th Cir. 2000)).

       The conclusion that probable cause existed to search Christian’s home is compelled,
moreover, by our recent published decision in United States v. Hines, 885 F.3d 919 (6th Cir.
2018), in which we emphasized the importance of the totality-of-the-circumstances approach:
“Not all search warrant affidavits include the same ingredients,” we said before recognizing that
“[i]t is the mix that courts review to decide whether evidence generated from the search may be
used or must be suppressed.” Id. at 921–22. The affidavit at issue in Hines, like the one here,
was substantial. Both included, among other things, recent evidence of drug-related activity:
there, a confidential informant’s statement that one day earlier he had seen drugs at the
subsequently searched home; here, the officers’ finding heroin on Thomas after having observed
his leaving 618 Grandville. But the takeaway from Hines most salient here is methodological,
not analogical: Hines requires us to look holistically at what the affidavit does show, instead of
focusing on what the affidavit does not contain or the flaws of each individual component of the
affidavit. Doing the former establishes probable cause here. Rejecting probable cause on the
affidavit in this case therefore flies in the face of Hines, a well-reasoned precedential decision.
 No. 17-1799                         United States v. Christian                             Page 38


       Because the affidavit contained more than enough to establish probable cause, it follows
as a matter of logic that, at the very least, Christian’s suppression motion was properly denied
because of the good-faith exception of United States v. Leon, 468 U.S. 897 (1984). Under Leon,
the exclusionary rule does not bar from admission “evidence seized in reasonable, good-faith
reliance on a search warrant that is subsequently held to be defective.” Id. at 905. If somehow
the affidavit at issue here could be deemed insufficient to establish probable cause, then this is a
case in the very heartland of the Leon exception. Contrary to Christian’s argument, the affidavit
was not “bare bones.” We reserve that label for an affidavit that “merely states suspicions,
beliefs, or conclusions, without providing some underlying factual circumstances regarding
veracity, reliability, and basis of knowledge.” United States v. Washington, 380 F.3d 236, 241
n.4 (6th Cir. 2004) (internal quotation omitted). To further describe the bare-bones standard is to
show why it does not apply here. We have said that, to be considered bare bones, an affidavit
must be “so lacking in indicia of probable cause” as to make an officer’s “belief in its
existence . . . objectively unreasonable.” United States v. Laughton, 409 F.3d 744, 748 (6th Cir.
2005). In United States v. Williams, 224 F.3d 530 (6th Cir. 2000), we described how woefully
deficient an affidavit must be before it meets this standard:

               An example of a “bare bones” affidavit is found in Gates, 462 U.S. at 239,
       where the Court, pointing to one from Nathanson v. United States, 290 U.S. 41
       (1933), said, “A sworn statement of an affiant that ‘he has cause to suspect and
       does believe that’ liquor illegally brought into the United States is located on
       certain premises will not do.” Another illustration was taken from Aguilar v.
       Texas, 378 U.S. 108 (1964), that “[a]n officer’s statement that ‘affiants have
       received reliable information from a credible person and believe’ that heroin is
       stored in a home, is likewise inadequate.” Gates, 462 U.S. at 239. Thus, a “bare
       bones” affidavit is similar to, if not the same as, a conclusory affidavit. It is “one
       which states ‘only the affiant’s belief that probable cause existed.’” United States
       v. Finch, 998 F.2d 349, 353 (6th Cir. 1993) (quoting United States v. Ciammitti,
       720 F.2d 927, 932 (6th Cir. 1983)).

Williams, 224 F.3d at 533.

       Although one can split hairs about the affidavit in this case, it is impossible to deny that it
contains factual allegations, not just beliefs or conclusions. Each factual allegation, regardless of
any infirmities, at least purports to link Christian to drug trafficking at 618 Grandville. An
affidavit need only present “some connection, regardless of how remote it may have been,”
 No. 17-1799                       United States v. Christian                            Page 39


United States v. White, 874 F.3d 490, 497 (6th Cir. 2017), or, in other words, establish a
“minimally sufficient nexus between the illegal activity and the place to be searched,” nited
States v. Brown, 828 F.3d 375, 385 (6th Cir. 2016), to avoid the bare-bones designation and thus
be one upon which an officer can rely in good faith. Because the affidavit here established
probable cause, it also necessarily satisfies this lower requirement. To hold otherwise is to
equate the five-page, extensively sourced affidavit here with the short, conclusory, and self-
serving ones for which the bare-bones designation has been, and ought to be, reserved.

       Our decision in United States v. Hython, 443 F.3d 480 (6th Cir. 2006), is almost
completely inapposite here. We held there that the affidavit—which recounted only a single,
undated controlled purchase—did not satisfy the good-faith exception. Id. at 486, 488–89.
Although the affidavit linking 618 Grandville to drug dealing did include information about an
arguably stale controlled purchase, the similarities between this case and Hython end there.
Indeed, this case is like Hython only if, engaging in the methodological error forbidden by the
Supreme Court in Wesby, one completely ignores most of the affidavit by discounting each item
one by one. Indeed, Hython by negative inference supports the existence of good-faith reliance
here by showing just how unsubstantiated an affidavit must be to fail to qualify under Leon’s
good-faith exception.

       This is a particularly egregious case to misapply the good-faith exception given the utter
lack of police wrongdoing. The “exclusionary rule is designed to deter police misconduct rather
than to punish the errors of judges and magistrates.” Leon, 468 U.S. at 916. As the Supreme
Court explained in Leon, “the marginal or nonexistent benefits produced by suppressing
evidence obtained in objectively reasonable reliance on a subsequently invalidated search
warrant cannot justify the substantial costs of exclusion.” Id. at 922. This balance supports the
principle that, as we said in United States v. Carpenter, 360 F.3d 591 (6th Cir. 2004) (en banc),
the good-faith exception requires “a less demanding showing than the ‘substantial basis’
threshold required to prove the existence of probable cause in the first place.” Id. at 595–96
(quoting United States v. Bynum, 293 F.3d 192, 195 (4th Cir. 2002) (citation omitted)). Refusing
to adhere to those decisions in a case like Christian’s unduly exalts the Fourth Amendment
interest marginally served by deterring nonculpable conduct over the public interest in
 No. 17-1799                       United States v. Christian                          Page 40


combatting crime—and amounts to effective disregard of Supreme Court precedent as well as
our own.

       Finally, it is questionable to conclude that the district court erred by admitting the
challenged telephone-call evidence. In any event, any such error was harmless, given that, as
explained above, the evidence obtained in accordance with the search warrant was properly
admitted. Because suppression was correctly denied, the jury properly heard, for example,
evidence that officers found 70 grams of heroin next to two loaded guns in Christian’s basement
and cocaine in another part of the house, that the DNA found on one of the guns matched
Christian’s, and that Christian’s cell phone contained text messages about drug trafficking.
Considering that evidence, the phone call added relatively little: it connected Thomas and
Christian, which provided a basis for the jury to conclude that Christian had sold drugs to
Thomas, and it linked Christian to a third gun. But even had that evidence not been admitted, no
jury could have acquitted Christian on these charges.      The evidence against him was too
damning. Admitting the phone-call statements was therefore harmless.

       The judgment of the district court should be affirmed.
