It is a federal crime for a person who has been convicted of a “misdemeanor crime of domestic violence” to possess a gun. 18 U.S.C. § 922(g)(9). A “misdemeanor crime of domestic violence” means a misdemeanor that “has, as an element, the use or attempted use of physical force, or the threatened use of a deadly weapon,” and that is committed by a person with one of several specified relationships to the victim. 18 U.S.C. § 921(a)(33). Late last year, the Fourth Circuit ruled that North Carolina misdemeanor assault convictions generally don’t satisfy that definition.