United States v. Caceres-Olla, 738 F.3d 1051 (9th Cir. Dec. 23, 2013) (by failing to respond to petitioners argument before the court of appeals that a conviction did not constitute a sexual abuse of a minor aggravated felony, the government waived reliance on that crime of violence theory); citing United States v. Castillo"Marin, 684 F.3d 914, 919 (9th Cir. 2012).