did not affect the defendant’s guideline range, a sentence reduction under § 3582(c)(2) was properly denied). Mr. Norwood concedes that the guideline range would have remained the same based on the findings that the district court had made at sentencing. Appellant’s Opening Br. at 9. But Mr. Norwood challenges these findings, arguing that the district court violated the U.S. Constitution by failing to allow the jury to decide matters involving relevant conduct. In our view, this argument is not available under § 3582(c)(2). A § 3582(c)(2) motion is available to request a sentence reduction only for the sentencing range that was lowered by the Commission’s amendment, not to challenge other aspects of a defendant’s sentence. See United States v. Price, 438 F.3d 1005, 1007 (10th Cir.2006) (<HOLDING>); see also United States v. Gay, 771 F.3d 681,
holding that united states v booker 543 us 220 125 sct 738 160 led2d 621 2005 did nothing to alter the rule that judges cannot depart below a statutorily provided minimum sentence except upon the governments motion on the basis of substantial assistance holding that waiver of right to appeal sentence in plea agreement accepted before decision in united states v booker 543 us 220 125 sct 738 160 led2d 621 2005 was not invalidated by change in law holding that united states v booker 543 us 220 125 sct 738 160 led2d 621 2005 did not alter the standard of review for the interpretation and application of the guidelines holding that united states v booker 543 us 220 125 sct 738 160 led2d 621 2005 does not provide a basis for a sentence reduction under 18 usc  3582c holding that the changes in sentencing law imposed by united states v booker 543 us 220 125 sct 738 160 led2d 621 2005 did not render waiver of appeal involuntary and unknowing