WASHINGTON (AP) — The Supreme Court won't hear a dispute over a U.S. Postal Service regulation that bans guns from post office property and adjacent parking lots.

The justices on Monday let stand an appeals court ruling that said the Second Amendment right to bear arms does not extend to government buildings or the parking areas that serve them.

The case involved Colorado resident Tab Bonidy, who has a permit to carry a concealed handgun. He sought a court order striking down the regulation after learning he would be prosecuted for carrying his gun while picking up mail at his local post office or leaving it in his car.

The Obama administration argued that the Second Amendment does not restrict laws forbidding guns in sensitive places such as schools and government buildings.