                               In the

    United States Court of Appeals
                For the Seventh Circuit
                    ____________________
No. 17-1061
JOSHUA VASQUEZ and
MIGUEL CARDONA,
                                                Plaintiffs-Appellants,

                                 v.

KIMBERLY M. FOXX, in her official
capacity as the State’s Attorney of
Cook County, and CITY OF CHICAGO,
                                               Defendants-Appellees.
                    ____________________

          Appeal from the United States District Court for
         the Northern District of Illinois, Eastern Division.
              No. 16-cv-8854 — Amy J. St. Eve, Judge.
                    ____________________

    ARGUED NOVEMBER 28, 2017 — DECIDED JULY 11, 2018
               ____________________

   Before BAUER, ROVNER, and SYKES, Circuit Judges.
    SYKES, Circuit Judge. Joshua Vasquez and Miguel Cardona
are convicted child sex offenders who live in Chicago and
are required to register as sex offenders and comply with
state restrictions on where they may live. For example, a
child sex offender may not knowingly live within 500 feet of
2                                                       No. 17-1061

a school, playground, or child-care center. 720 ILL. COMP.
STAT. 5/11-9.3(b-5), (b-10). A few years after Vasquez and
Cardona were convicted, Illinois added child day-care
homes and group day-care homes to the list of places in-
cluded in the 500-foot residential buffer zone. § 5/11-9.3(b-
10). When Vasquez and Cardona updated their sex-offender
registrations in August 2016, the Chicago Police Department
told them they had to move because child day-care homes
had opened up within 500 feet of their residences. The
Department gave them 30 days to come into compliance
with the statute.
   Vasquez and Cardona sued the City of Chicago and
Kimberly M. Foxx, the Cook County State’s Attorney,1
seeking relief under 42 U.S.C. § 1983 based on four alleged
constitutional violations. First, they claimed that the
amendment to the residency statute imposes retroactive
punishment in violation of the Ex Post Facto Clause. Next,
they alleged that applying the amended statute to them
amounted to an unconstitutional taking of their property in
violation of the Fifth Amendment’s Takings Clause. Finally,
they asserted two due-process claims, one procedural and
one substantive: they complained that the statute is enforced
without a hearing for an individualized risk assessment
and is not rationally related to a legitimate state interest.
   The district judge rejected each claim at the pleadings
stage and we affirm. Under Supreme Court and circuit
precedent, the amended statute is neither impermissibly


1 Anita Alvarez was the Cook County State’s Attorney when the suit was
filed. Foxx replaced her in that office on December 1, 2016, and was
substituted as a defendant. See FED. R. CIV. P. 25(d).
No. 17-1061                                                    3

retroactive nor punitive, so it raises no ex post facto con-
cerns. The plaintiffs’ claim under the Takings Clause fails for
two independent reasons: it is unexhausted and the amend-
ment was adopted before they acquired their homes, so it
did not alter their property-rights expectations. The proce-
dural due-process claim is a nonstarter for the straightfor-
ward reason that there is no right to a hearing to establish a
fact not material to the statute. And the law is not unconsti-
tutional in substance: it easily satisfies rational-basis review.
                        I. Background
    Illinois first adopted residency restrictions for child sex
offenders in 2000. Act of July 7, 2000, Pub. Act No. 91-911,
2000 Ill. Laws 2051. As originally enacted the law prohibited
child sex offenders from knowingly residing within 500 feet
of a “playground or a facility providing programs or ser-
vices exclusively directed toward persons under 18 years of
age.” Id. In subsequent years the Illinois legislature amended
the statute to add other places to the list. At issue here is a
2008 amendment prohibiting child sex offenders from
knowingly residing within 500 feet of a “day care home” or
“group day care home.” Act of Aug. 14, 2008, Pub. Act
No. 95-821, 2008 Ill. Laws 1383. Noncompliance is a Class 4
felony punishable by up to three years in prison. 720 ILL.
COMP. STAT. 5/11-9.3(f); 730 ILL. COMP. STAT. 5/5-4.5-45(a).
    Plaintiff Joshua Vasquez was convicted of child-
pornography possession in 2001 and must register as a sex
offender for the rest of his life. His conviction also makes
him a child sex offender within the meaning of the residency
statute. 720 ILL. COMP. STAT. § 5/11-9.3(d)(1). On August 25,
2016, Vasquez visited the Chicago Police Department head-
quarters to complete his annual sex-offender registration. As
4                                                        No. 17-1061

of that date, he had lived in his Chicago apartment for three
years with his wife and daughter, and his lease continued
through August 19, 2017. The Department notified him that
a child day-care home had opened 480 feet from his apart-
ment and told him he had to move within 30 days. Vasquez
alleges that he has been unable to find suitable and afforda-
ble housing that complies with the residency requirements.
He also alleges that his daughter’s schooling will be disrupt-
ed if the family has to move outside the school district.
    Plaintiff Miguel Cardona was convicted of indecent solic-
itation of a child in 2004. 2 Like Vasquez, Cardona’s convic-
tion makes him a child sex offender subject to the
requirements of the residency statute. Id. Cardona has lived
in his Chicago home for roughly 25 years, but he did not
purchase it until 2010 so he cannot claim an exemption for
offenders who owned their homes prior to the enactment of
the 2008 amendment. § 5/11-9.3(b-10). When Cardona com-
pleted his annual sex-offender registration on August 17,
2016, the Chicago Police Department notified him that a
child day-care home had opened 475 feet from his residence.
Like Vasquez, he was given 30 days to move. Cardona
alleges that he cannot afford to move into compliant hous-
ing. He also alleges that the day-care home in question has
been open since 2014 and his proximity to it has caused no
problems.
    Vasquez and Cardona challenge the 2008 amendment fa-
cially and as applied to them. They sued the City of Chicago


2 The complaint alleges that Cardona’s conviction requires him to
register as a sex offender through 2017. Although his registration duty
has expired, he remains subject to the residency restrictions.
No. 17-1061                                                    5

and State’s Attorney Foxx seeking declaratory and injunctive
relief under § 1983 for violation of the Ex Post Facto Clause,
the Fifth Amendment’s Takings Cause, and the Fourteenth
Amendment’s Due Process Clause. The judge entered an
order enjoining the defendants from forcing the plaintiffs to
vacate their homes or otherwise enforcing the amended
statute against them while the case was pending.
    The defendants moved to dismiss under Rule 12(b)(6) of
the Federal Rules of Civil Procedure, and the judge granted
the motion. She held that the 2008 amendment created only
prospective legal obligations and thus raised no concerns
under the Ex Post Facto Clause. On the takings claim she
concluded that the plaintiffs had not suffered an unconstitu-
tional taking of their property under the test announced in
Penn Central Transportation Co. v. City of New York, 438 U.S.
104 (1978). Finally, the judge ruled that the complaint failed
to state a procedural or substantive due-process claim
because there is no right to a hearing to establish a fact not
material under the statute and the challenged residency
restriction is a rational means of protecting children from
convicted child sex offenders.
   Vasquez and Cardona appealed, and the judge granted
their motion to extend her order maintaining the status quo
through the pendency of the appeal. In the meantime
Vasquez renewed his lease, and Cardona lives in the same
home.
                        II. Discussion
   We review the judge’s dismissal order de novo. Roberts v.
City of Chicago, 817 F.3d 561, 564 (7th Cir. 2016). Before taking
up the merits of the plaintiffs’ constitutional claims, we note
6                                                     No. 17-1061

that the City is not a proper defendant on any of them, at
least not as the claims were pleaded. A municipality is
subject to § 1983 liability only if one of its policies caused the
constitutional injury. Swanigan v. City of Chicago, 881 F.3d 577,
582 (7th Cir. 2018) (citing Monell v. Dep’t of Soc. Servs. of N.Y.,
436 U.S. 658 (1978)). The “official policy” analysis isolates
ultimate responsibility for a claimed constitutional violation,
distinguishing the acts of a municipality from the acts of its
employees. Estate of Sims ex rel. Sims v. County of Bureau,
506 F.3d 509, 515 (7th Cir. 2007). A municipality’s enforce-
ment of a state law does not constitute an actionable official
policy. See Surplus Store & Exchange, Inc. v. City of Delphi,
928 F.2d 788, 791 (7th Cir. 1991) (“It is difficult to imagine a
municipal policy more innocuous and constitutionally
permissible, and whose causal connection to the alleged
violation is more attenuated, than the ‘policy’ of enforcing
state law.”).
    The City’s police department did not enforce a Chicago
ordinance or other municipal policy; rather, this suit chal-
lenges a state law. The City can be held liable only if it has
“as a matter [of] policy or custom, enforce[d] the law in a
manner or method that caused the constitutional violation.”
Id. Vasquez and Cardona contend that the City exercises
discretion in enforcing the residency statute—for example,
by checking for compliance annually when sex offenders
register and by giving sex offenders 30 days’ notice to move.
But the complaint does not allege a causal connection be-
tween the City’s compliance monitoring and the plaintiffs’
constitutional injury. Id. at 790. The plaintiffs do face a
continuing threat of prosecution if they fail to comply with
the 2008 amendment, but the State’s Attorney is the proper
defendant to sue for redress of that injury. For this inde-
No. 17-1061                                                                     7

pendent reason, which the City preserved below but the
judge did not need to address, the plaintiffs failed to state a
claim against the City.
A. Ex Post Facto Clause
     The Ex Post Facto Clause 3 forbids retroactive punish-
ment—that is, “the imposition of punishment more severe
than the punishment assigned by law when the act to be
punished occurred.” Weaver v. Graham, 450 U.S. 24, 30 (1981).
So a statute is not an impermissible ex post facto law unless
it is both retroactive and penal. United States v. Leach, 639 F.3d
769, 773 (7th Cir. 2011).
    Our decision in Leach is conclusive on the retroactivity
question. There we considered an ex post facto challenge to
the federal Sex Offender Registration and Notification Act
(“SORNA”). Id. at 770–71. Enacted in 2006, SORNA requires
all convicted sex offenders—including those who were
convicted before the Act was adopted—to register in each
jurisdiction where they live, work, or attend school; the Act
also imposes criminal penalties for failure to register or
update a registration following interstate travel. Id. at 771
(citing 42 U.S.C. § 16913(a) and 18 U.S.C. § 2250(a)). Donald
Leach was convicted of child molestation in 1990, long
before SORNA came into being, and he was charged with
failing to update his registration when he moved to another
state. He argued that SORNA could not be applied to him
because it retroactively increased his punishment in viola-
tion of the Ex Post Facto Clause.




3   “No … ex post facto Law shall be passed.” U.S. CONST. art. I, § 9, cl. 3.
8                                                 No. 17-1061

    We rejected that argument and affirmed Leach’s convic-
tion. We began by noting that SORNA’s registration duty
and the criminal penalty for failure to comply are plainly
prospective in operation. In other words, the new regulatory
scheme applies only to conduct occurring after the law’s
enactment—that is, a sex offender’s failure to register or
update his registration following interstate travel. Accord-
ingly, we held that SORNA “merely creates new, prospective
legal obligations based on the person’s prior history.” Id. at
773.
    So too here. Although the 2008 amendment to the Illinois
residency statute applies to Vasquez, Cardona, and others
like them who were convicted of child sex offenses before
the amendment was adopted, its requirements and any
criminal penalty apply only to conduct occurring after its
enactment—i.e., knowingly maintaining a residence within
500 feet of a child day-care home or group day-care home.
   We also held in Leach that under Smith v. Doe, 538 U.S. 84
(2003), SORNA’s registration regime for sex offenders is not
penal in nature. Id. Smith upheld Alaska’s sex-offender
registration statute against an ex post facto challenge. The
Court found that the Alaska registration regime was a
nonpunitive civil regulatory scheme and thus raised no ex
post facto concerns. 538 U.S. at 105–06. Because SORNA is
indistinguishable from the Alaska statute upheld in Smith,
we concluded in Leach that the federal law is likewise a civil
regulatory scheme and not a penal statute. 639 F.3d at 773.
    Again, the same is true here. The Illinois residency stat-
ute is similar enough to the sex-offender registration statutes
at issue in Smith and Leach that it’s safe to apply those hold-
ings and reject the plaintiffs’ challenge without further ado.
No. 17-1061                                                   9

If more is needed, we briefly address the two-step frame-
work the Court used in Smith and explain why the Illinois
residency statute is not punitive under that test.
    The Court’s framework asks if the legislature intended to
impose punishment, and if not, whether the civil regulatory
scheme is “so punitive either in purpose or effect as to
negate” the legislature’s nonpunitive intent. Smith, 538 U.S.
at 92 (quotation marks omitted). Vasquez and Cardona do
not argue that the Illinois legislature intended to impose
additional punishment, so we skip directly to the second
step. To determine if Alaska’s registration law was punitive
in effect, the Court examined several factors: whether the
regulatory regime “in its necessary operation … [would be]
regarded in our history and traditions as a punishment[,]
imposes an affirmative disability or restraint[,] promotes the
traditional aims of punishment[,] has a rational connection
to a nonpunitive purpose[,] or is excessive with respect to
this purpose.” Id. at 97. The Court assigned no particular
priority or weight to any of these factors: they are “neither
exhaustive nor dispositive” but merely “relevant.” Id.
     As for the first factor, Vasquez and Cardona compare the
Illinois residency restrictions to the historical punishments of
shaming and banishment. As the Court noted in Smith,
however, early shaming punishments “inflict[ed] public
disgrace,” and “[t]he aim was to make these offenders suffer
permanent stigmas, which in effect cast the person out of the
community.” Id. at 97–98 (internal quotation marks omitted).
The Alaska registration requirement did not shame child sex
offenders in this way, id., and neither do the Illinois residen-
cy restrictions. Nor do the residency restrictions resemble
banishment. Under that early form of punishment, “[t]he
10                                                  No. 17-1061

most serious offenders … could neither return to their
original community nor, reputation tarnished, be admitted
easily into a new one.” Id. (citing THOMAS G. BLOMBERG &
KAROL LUCKEN, AMERICAN PENOLOGY: A HISTORY OF
CONTROL 30–31 (2000)). The Illinois residency statute merely
keeps child sex offenders from living in very close proximity
to places where children are likely to congregate; it does not
force them to leave their communities.
    Vasquez and Cardona also compare the residency re-
strictions to criminal punishments such as probation and
supervised release. The comparison is inapt; the Court
rejected it in Smith, noting that “offenders subject to the
Alaska statute are free to move where they wish and to live
and work as other citizens[] with no supervision.” Id. at 101.
Although the Illinois residency restrictions limit where sex
offenders may live, the statute does not control any other
aspect of their lives and thus does not resemble the compre-
hensive control of probation and supervised release.
    The Court also examined the extent to which the Alaska
law imposed an affirmative disability or restraint on sex
offenders, observing that “[i]f the disability or restraint is
minor and indirect, its effects are unlikely to be punitive.” Id.
at 100. We accept for present purposes that Vasquez and
Cardona have had difficulty finding suitable compliant
housing in their neighborhoods. We also recognize that
including child day-care homes within the 500-foot buffer
zone creates some unpredictability: schools and playgrounds
are typically known and fixed, but a private residential
property can become a day-care home without anyone in the
neighborhood noticing. However, like the registration
scheme at issue in Smith, the residency law “imposes no
No. 17-1061                                                  11

physical restraint[] and so does not resemble the punishment
of imprisonment, which is the paradigmatic affirmative
disability or restraint.” Id.
    Another relevant factor in the Smith framework is wheth-
er the statute promotes the traditional aims of punishment,
but the Court strictly limited the scope of this inquiry, asking
only whether the law is retributive. 538 U.S. at 102. Vasquez
and Cardona do not develop an argument on this point,
perhaps because the residency restrictions are so clearly not
retributive. As in Smith, the obvious aim of the statute is to
protect children from the danger of recidivism by convicted
child sex offenders. Id.
    The last two factors in the Smith framework are related:
the Court asked whether the Alaska statute was rationally
connected to a nonpunitive purpose and whether its re-
quirements were excessive with respect to that purpose. Id.
at 103. At this step of the analysis, the challenger is required
to show that the statute’s “nonpunitive purpose is a sham or
mere pretext.” Id. (internal quotation marks omitted).
Vasquez and Cardona maintain that sex offenders do not
reoffend more than other criminals. Even if we accept that
assertion, similar recidivism rates across different categories
of crime would not establish that the nonpunitive aim of this
statute—protecting children—is a sham. Indeed, Smith holds
that states may make “reasonable categorical judgments …
without any corresponding risk assessment.” Id. at 103–04.
   In short, under Smith and Leach, the 2008 amendment to
the sex-offender residency statute is neither retroactive nor
12                                                           No. 17-1061

punitive and thus raises no ex post facto concerns. 4 The
judge was right to dismiss this claim.
B. Takings Clause
    Next, Vasquez and Cardona argue that the judge wrong-
ly dismissed their claim that the 2008 amendment effectively
“takes” their property without just compensation in viola-
tion of the Fifth Amendment’s Takings Clause. But neither
plaintiff pursued state remedies prior to filing this suit, and
current law requires exhaustion of state mechanisms for
obtaining compensation before a takings claim can be
brought in federal court. Williamson Cnty. Reg’l Planning
Comm’n v. Hamilton Bank of Johnson City, 473 U.S. 172, 194
(1985). 5



4 Vasquez and Cardona rely heavily on the Sixth Circuit’s decision in
Does #1-5 v. Snyder, 834 F.3d 696 (6th Cir. 2016), but that case is easily
distinguishable. The plaintiffs there challenged a series of amendments
to the Michigan sex-offender registration law, which the court character-
ized as imposing “a byzantine code governing in minute detail the lives
of the state’s sex offenders.” Id. at 697. The challenged provisions
included a residency restriction prohibiting sex offenders from “living,
working, or ‘loitering’ within 1,000 feet of a school.” Id. at 698. The
plaintiffs also challenged a provision publicly classifying registrants
“into three tiers, which ostensibly correlate to current dangerousness,
but which are based[] not on individual assessments, but solely on the
crime of conviction.” Id. Finally, the plaintiffs challenged a provision
requiring registrants to “appear in person ‘immediately’ to update
information such as new vehicles or ‘internet identifiers.’” Id. The court
considered these provisions collectively and concluded that this package
of civil regulatory restrictions were punitive in effect. Id. at 702–06. The
single 2008 amendment at issue in this case does not remotely compare.
5 Williamson County has been criticized, and the Supreme Court may
revisit and overrule it next term. Knick v. Township of Scott, 862 F.3d 310
No. 17-1061                                                               13

     To exhaust a takings claim, the plaintiff must seek relief
in state court unless doing so would be “futile.” Peters v.
Village of Clifton, 498 F.3d 727, 732 (7th Cir. 2007). Relying on
Callahan v. City of Chicago, 813 F.3d 658 (7th Cir. 2016), the
judge assumed that the Illinois state courts could not pro-
vide relief for this claim. In Callahan, however, we accepted
Chicago’s concession that a suit for relief on a takings claim
in an Illinois state court would be futile. Id. at 660. Foxx has
not made a similar concession here. And as we explained in
Sorrentino v. Godinez, 777 F.3d 410, 413 (7th Cir. 2015), the
Illinois Court of Claims can provide damages for a regulato-
ry taking. By failing to seek damages in state court, the
plaintiffs have not exhausted their challenge to the residency
requirements. 6
   Even if we looked past this procedural barrier, the tak-
ings claim would fail on the merits. Under the Supreme
Court’s Penn Central test, we’re instructed to examine “(1) the
nature of the government action, (2) the severity of [its]
economic impact on the [property] owner, and (3) the degree


(3d Cir. 2017), cert. granted, 138 S. Ct. 1262 (Mem.) (2018). For now it
remains good law.
6  Vasquez and Cardona argue that if they cannot proceed on an as-
applied takings claim, they should be permitted to raise a facial takings
claim. This argument is based on a line of caselaw holding that a facial
takings challenge need not meet the Williamson County exhaustion
requirement. Peters v. Village of Clifton, 498 F.3d 727, 732 (7th Cir. 2007).
But Vasquez and Cardona did not develop an argument that the 2008
amendment is facially unconstitutional under the Takings Clause. The
issue is therefore waived. See Judge v. Quinn, 612 F.3d 537, 557 (7th Cir.
2010).
14                                                No. 17-1061

of interference with the owner’s reasonable investment-
backed expectations.” Bettendorf v. St. Croix County, 631 F.3d
421, 430 (7th Cir. 2011) (internal quotation marks omitted).
On the first of these factors, a taking “may more readily be
found when the interference with property can be character-
ized as a physical invasion by government than when inter-
ference arises from some public program adjusting the
benefits and burdens of economic life to promote the com-
mon good.” Penn Central, 438 U.S. at 124 (citation omitted).
Although the Illinois law restricts a child sex offender’s use
of his property, it cannot be characterized as a physical
invasion. The law merely adjusts the benefits and burdens of
economic life.
    Moving on to the economic impact of the 2008 amend-
ment, we keep in mind that a regulation does not amount to
a taking simply because the property owner can no longer
make the “most beneficial use of the property.” Id. at 125.
Even the denial of a traditional property right does not
necessarily amount to a taking. For example, in Andrus v.
Allard, 444 U.S. 51, 65–66 (1979), the Supreme Court held that
a law preventing the sale of certain artifacts did not amount
to a taking of property within the meaning of the Fifth
Amendment. The Court emphasized that the regulation did
not compel the surrender of the artifacts and that the owners
could still derive some economic benefit by “exhibit[ing] the
artifacts for an admissions charge.” Id. at 66. The economic
impact of the 2008 amendment to the Illinois residency
statute is minimal in comparison to Andrus. Although
Vasquez and Cardona cannot reside within the 500-foot
buffer zone, there is no question that many others can,
leaving open a broad market to sell or sublease their resi-
dences at full market value.
No. 17-1061                                                    15

    The third factor in the Penn Central analysis seals the fate
of the plaintiffs’ takings claims. We’re instructed to look at
their “expectation concerning the use of the parcel” and
whether they can obtain a “reasonable return” on their
investment. Penn Central, 438 U.S. at 136. Vasquez and
Cardona assert that they had no reasonable expectation they
would have to move. They rely on Mann v. Georgia Depart-
ment of Corrections, 653 S.E.2d 740 (Ga. 2007), which held that
a sex-offender residency statute “positively precludes appel-
lant from having any reasonable investment-backed expecta-
tion in any property purchased as his private residence.” Id.
at 744. But Penn Central simply does not support this expan-
sive understanding of a property owner’s investment-backed
expectations.
    A properly focused inquiry looks to the effect of the
2008 amendment on the plaintiffs’ property-rights expecta-
tions. And because the amendment was on the books when
Cardona purchased his home and Vasquez leased his apart-
ment, its terms were necessarily part of any property-rights
expectations they could have held. That’s enough to doom
this takings claim on the merits. See, e.g., Goodpaster v. City of
Indianapolis, 736 F.3d 1060, 1074 (7th Cir. 2013) (holding that
the bar owners’ reasonable expectations included the expan-
sion of the smoking ban); Rancho de Calistoga v. City of Calis-
toga, 800 F.3d 1083, 1091 (9th Cir. 2015) (“[T]hose who buy
into a regulated field … cannot object when regulation is
later imposed.”).
C. Procedural Due Process
    The procedural aspect of the due-process claim rests on
the plaintiffs’ allegation that the 2008 amendment is uncon-
stitutionally enforced against them without a hearing or
16                                                    No. 17-1061

other procedure to determine whether they actually pose a
continued threat to children. This claim is squarely fore-
closed by Connecticut Department of Public Safety v. Doe,
538 U.S. 1 (2003). There the Supreme Court considered
whether a sex-offender registration statute required a de-
termination that the offender was currently dangerous. Id. at
4. The answer was “no.” The Court reasoned that “due
process does not require the opportunity to prove a fact that
is not material to the State’s statutory scheme.” Id.; see also id.
at 8 (Scalia, J., concurring) (“[A] validly enacted statute
suffices to provide all the process that is ‘due … .’”); Bi-
Metallic Inv. Co. v. State Bd. of Equalization, 239 U.S. 441, 445
(1915) (“General statutes within the state power are passed
that affect the person or property of individuals, sometimes
to the point of ruin, without giving them a chance to be
heard.”). The Illinois statute places residency restrictions on
all child sex offenders regardless of their individual risk of
recidivism. Vasquez and Cardona are not entitled to a
hearing for an individualized risk assessment.
D. Substantive Due Process
    Finally, Vasquez and Cardona argue that the
2008 amendment to the residency statute is substantively
unconstitutional. They urge us to apply heightened scrutiny,
claiming that the residency requirements were enacted out
of pure animus toward child sex offenders, a politically
unpopular group. See, e.g., United States v. Windsor, 570 U.S.
744, 770 (2013); U.S. Dep’t of Agric. v. Moreno, 413 U.S. 528,
556–58 (1973). Heightened scrutiny does not apply. The
residency statute is facially neutral and advances a compel-
ling governmental interest: protecting children from recidi-
vism by child sex offenders. The plaintiffs also press for
No. 17-1061                                                   17

heightened scrutiny because the statute infringes their
fundamental right to “establish a home.” See Washington v.
Glucksberg, 521 U.S. 702, 761 (1997). This argument is merit-
less. A law limiting where sex offenders may live does not
prevent them from establishing a home; it just constrains
where they can do so.
    This law triggers only rational-basis review, so we ask
whether its intrusion upon liberty is rationally related to a
legitimate governmental interest. Hayden ex rel. A.H. v.
Greensburg Cmty. Sch. Corp., 743 F.3d 569, 576 (7th Cir. 2014).
No one questions that protecting children from child sex
offenders is a legitimate governmental interest; indeed, it is a
compelling interest. See Doe v. City of Lafayette, 377 F.3d 757,
773 (7th Cir. 2004) (holding that the City’s interest in protect-
ing minors from child sex offenders is “not merely legiti-
mate, it is compelling”). The plaintiffs thus “have the burden
to negate every conceivable basis [that] might support [the
statute].” Goodpaster, 736 F.3d at 1071 (internal quotation
marks omitted).
   It’s self-evident that creating a buffer between a child
day-care home and the home of a child sex offender may
protect at least some children from harm. Indeed, as the
Supreme Court explained in Smith, a state legislature “could
conclude that a conviction for a sex offense provides evi-
dence of substantial risk of recidivism.” 538 U.S. at 103.
Vasquez and Cardona insist that “scant evidence” supports
the public-safety rationale of this statute; they also argue that
the harsh burdens placed on sex offenders are highly dis-
proportionate to any benefit. But our role is not to second-
guess the legislative policy judgment by parsing the latest
academic studies on sex-offender recidivism. See Goodpaster,
18                                                No. 17-1061

736 F.3d at 1071 (“Under rational basis review, a state law is
constitutional even if it is unwise, improvident, or out of
harmony with a particular school of thought.”) (internal
quotation marks omitted). This residency restriction on child
sex offenders cannot be called irrational.
                                                   AFFIRMED.
