
    UNITED STATES of America, Plaintiff-Appellee, v. SEALED DEFENDANT 3, Defendant-Appellant.
    No. 04-41061.
    Summary Calendar.
    United States Court of Appeals, Fifth Circuit.
    Decided June 22, 2006.
    Before HIGGINBOTHAM, BENAVIDES, and DENNIS, Circuit Judges.
   PER CURIAM:

Sealed Defendant 3 (Defendant) appeals the sentence that she received after she pleaded guilty to conspiracy to possess with intent to distribute one kilogram or more of heroin and five or more kilograms of cocaine. Defendant argues that the sentence imposed must be remanded under Blakely v. Washington, 542 U.S. 296, 124 S.Ct. 2531, 159 L.Ed.2d 403 (2004), and United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005), because the district court deemed the Guidelines mandatory. Because the Government does not address Defendant’s appeal waiver, it has waived its right to enforce it. See United States v. Lang, 440 F.3d 212, 213 (5th Cir.2006).

Regardless whether the error Defendant has identified is characterized as a Booker or Fanfan error , Defendant preserved that error by raising a Blakely objection in the district court. See United States v. Rodriguez-Mesa, 443 F.3d 397 (5th Cir. 2006). When a preserved Booker or Fan-fan error is presented, as here, this court looks to whether the Government has met its burden to show harmless error beyond a reasonable doubt in the imposition of the defendant’s sentence. Id. Based on the record before the court, this court cannot determine what the district court would have done absent the mandatory Guidelines. Therefore, the Government has not met its burden of proving that the Booker or Fanfan error was harmless beyond a reasonable doubt.

Defendant’s argument that the Ex Post Facto and Due Process Clauses prohibit the district court from applying Booker’s remedial opinion to her case was squarely rejected by this court in United States v. Charon, 442 F.3d 881 (5th Cir.2006).

Defendant’s sentence is VACATED, and the case is REMANDED for further proceedings. 
      
       Pursuant to 5th Cir. R. 47.5, the court has determined that this opinion should not be published and is not precedent except under the limited circumstances set forth in 5th Cir. R. 47.5.4.
     
      
      
         See United States v. Martinez-Lugo, 411 F.3d 597, 600 (5th Cir.) (referring to Ducan Fan-fan, the second defendant in the consolidated opinion in Booker, who did not experience Sixth Amendment error), cert. denied,-U.S. -, 126 S.Ct. 464, 163 L.Ed.2d 352 (2005); see also United States v. Villegas, 404 F.3d 355, 364 (5th Cir.2005) (discussing the difference between Booker and Fanfan error).
     