MEMORANDUM ***

The government appeals Steven Lavin-sky’s 48-month sentence of imprisonment, which is below the 60-month minimum mandated by statute. We have jurisdiction pursuant to 28 U.S.C. § 1291 . We vaeate Lavinsky’s sentence and remand to the district court for resentencing.

Lavinsky’s statute of conviction provides that “[wjhoever violates” that provision “shall be ... imprisoned not less than 5 years and not more than 20 years.” 18 U.S.C. § 2252A(b)(l) (emphases added). “It is axiomatic that a statutory minimum sentence is mandatory.” United States v. Sykes, 658 F.3d 1140, 1146 (9th Cir. 2011). That is, “[w]here ‘no exception to the statutory minimum applies ..., the court lack[s] the authority to refuse to impose’ ” the mandatory minimum. Id. (quoting United States v. Haynes, 216 F.3d 789, 799-800 (9th Cir. 2000)). No exception applies here, but the district court sentenced Lavinsky to a below-minimum term of imprisonment nevertheless, explaining only that the circumstances of lifetime supervision made that sentence sufficient. That was error.

Lavinsky’s sole contention on appeal is that statutory mandatory minimum sentences are unconstitutional under United States v. Booker, 543 U.S. 220 , 125 S.Ct. 738 , 160 L.Ed.2d 621 (2005), but our precedent forecloses that argument. See United States v. Ching Tang Lo, 447 F.3d 1212 , 1234 n.15 (9th Cir. 2006) (“There is nothing in Booker to suggest that statutorily mandated minimum sentences are merely advisory if the sentence is based on facts found by a jury by a preponderance of the evidence.”).

We therefore vaeate and remand for resentencing. On remand, the district court shall sentence Lavinsky within the range mandated by 18 U.S.C. § 2252A(b)(l). 1

Sentence VACATED and REMANDED for resentencing.

-phis disposition is not appropriate for publication and is not precedent except as provided by Ninth Circuit Rule 36-3.

. We decline Lavinsky’s invitation to strike the government’s opening brief and to dismiss the appeal for failure to prosecute. See 9th Cir. R. 31-2.3.