Martin Gonzalez Valdez pleaded guilty to conspiring to distribute over 500 grams of a mixture containing methamphetamine, in violation of 21 U.S.C. §§ 841(a)(1), (b)(1)(A), and 846. The district court1 sentenced him to 135 months imprisonment and 5 years supervised release. On appeal, counsel has moved to withdraw and filed a brief under Anders v. California, 386 U.S. 738, 87 S.Ct. 1396, 18 L.Ed.2d 493 (1967).

Having reviewed the record independently under Penson v. Ohio, 488 U.S. 75, 109 S.Ct. 346, 102 L.Ed.2d 300 (1988), we find no nonfrivolous issues. Accordingly, we grant counsel’s motion to withdraw, and we affirm.