MEMORANDUM **

Appellant Kenneth Smith (“Smith”) seeks review of an issue that he did not *119raise in the district court: whether California Vehicle Code Section 12801.5(e) renders his arrest unlawful. If the arrest was unlawful, the parties concede that the search incident to the arrest that led to the discovery of a firearm in Smith’s possession was also unlawful, and that Smith would not have pleaded guilty to being a felon in possession of a firearm under 18 U.S.C. § 922(g)(1).

Section 12801.5(e) provides in relevant part that “a peace officer may not detain or arrest a person solely on the belief that the person is an unlicensed driver.” Cal. Veh.Code § 12801.5(e). Smith contends that he was arrested solely because he was an unlicensed driver, and that his arrest was therefore unlawful. The government argues that the police did not arrest Smith solely because he was unlicensed, and also that section 12801.5(e) is not relevant to whether Smith’s arrest violated the Fourth Amendment.

The parties raised none of these arguments in the district court and ask us to review the district court decision for plain error. We decline to do so. Because Smith never argued the applicability of section 12801.5(e), the government had no reason to focus on alternative justifications for Smith’s arrest during district court proceedings. It also had no reason to address whether the Supreme Court’s decision in Atwater v. City of Lago Vista, 532 U.S. 318, 121 S.Ct. 1536, 149 L.Ed.2d 549 (2001) and our own in Bingham v. City of Manhattan Beach, 341 F.3d 939 (9th Cir. 2003) dictate that section 12801.5(e) has no effect on whether Smith’s arrest violated the Fourth Amendment.

We decline to decide these issues. See United States v. Carbajal, 956 F.2d 924, 931 (9th Cir. 1992) (noting that appellate court cannot resolve fact-dependent suppression issues in the first instance). We vacate the order denying Smith’s motion to suppress evidence, and remand this case to the district court with instructions to consider the lawfulness of the search of Smith in light of the parties’ new arguments.

VACATED and REMANDED with instructions.