MEMORANDUM **

George Villareal appeals from the district court’s order granting in part and *717denying in part his motion to be sentenced pursuant to 18 U.S.C. § 8553(a) and declare the mandatory minimum sentence in 18 U.S.C. § 3559(f) unconstitutional. Pursuant to Anders v. California, 386 U.S. 738, 87 S.Ct. 1396, 18 L.Ed.2d 493 (1967), Villareal’s counsel has filed a brief stating there are no grounds for relief, along with a motion to withdraw as counsel of record. We have provided the appellant with the opportunity to file a pro se supplemental brief. No pro se supplemental brief or answering brief has been filed.

Our independent review of the record pursuant to Penson v. Ohio, 488 U.S. 75, 80-81, 109 S.Ct. 346, 102 L.Ed.2d 300 (1988), discloses no arguable grounds for relief on direct appeal.

Accordingly, counsel’s motion to withdraw is GRANTED, and the district court’s judgment is AFFIRMED.