United States v. Dominguez-Maroyoqui, 748 F.3d 918 (9th Cir. Apr. 7, 2014) (federal conviction for assaulting a federal officer, in violation of 18 U.S.C. 111(a), is not categorically a crime of violence for illegal re-entry sentencing purposes, since the offense does not require, as an element, proof that defendant used, attempted to use, or threatened to use physical force).