                                                       United States Court of Appeals
                                                                Fifth Circuit
                                                             F I L E D
               IN THE UNITED STATES COURT OF APPEALS
                       FOR THE FIFTH CIRCUIT                  June 22, 2005

                                                          Charles R. Fulbruge III
                            No. 04-40935                          Clerk
                        Conference Calendar


UNITED STATES OF AMERICA,

                                    Plaintiff-Appellee,

versus

MARCUS ROBERTS,

                                    Defendant-Appellant.

                       --------------------
          Appeal from the United States District Court
                for the Eastern District of Texas
                   USDC No. 1:03-CR-174-ALL-RC
                       --------------------

Before WIENER, BENAVIDES, and DENNIS, Circuit Judges.

PER CURIAM:*

     Marcus Roberts pleaded guilty to possession of a prohibited

object by an inmate.   In reliance on United States v. Booker,

125 S. Ct. 738 (2005), he argues for the first time on appeal

that the district court erred in imposing a sentence based on

facts not alleged in the indictment, not admitted by him in

court, and not proved to a jury beyond a reasonable doubt.

Specifically, Roberts challenges the district court’s imposition

of a two-level increase in his base offense level pursuant to

U.S.S.G. § 2D1.1(b)(3) on the ground that the object of the


     *
       Pursuant to 5TH CIR. R. 47.5, the court has determined that
this opinion should not be published and is not precedent except
under the limited circumstances set forth in 5TH CIR. R. 47.5.4.
                            No. 04-40935
                                 -2-

offense was the distribution of a controlled substance while in

prison.   He also argues that the district court erred in

sentencing him pursuant to a mandatory application of the

Sentencing Guidelines.

     To demonstrate plain error, Roberts has the burden of

showing an error that is obvious and that affects his substantial

rights.   United States v. Mares, 402 F.3d 511, 520 (5th Cir.

2005), petition for cert. filed (Mar. 31, 2005) (No. 04-9517).

To show that the error affected his substantial rights, Roberts

must show that “the sentencing judge--sentencing under an

advisory scheme rather than a mandatory one--would have reached a

significantly different result.”     Id. at 521; see also United

States v. Valenzuela-Quevedo, 407 F.3d 728, 732-34 (5th Cir.

2005).    Roberts has not shown that the district court would have

imposed a different sentence.     Accordingly, we AFFIRM the

judgment of the district court.
