Man parks his car in a reserved parking spot, for which he lacks a permit, about 1,000 feet from the U.S. Capitol. After cops discover three guns in the car, man is convicted of possessing a firearm while on the Capitol grounds. Following a trip to the U.S. Supreme Court, the case returns to the D.C. Circuit for a ruling on the man’s Second Amendment and due process defenses. Which lack merit, the court affirms. The conviction stands.