Three American defense contractors held for five years by leftist rebels in Colombia moved closer to collecting on a $318 million judgment against their former captors when a U.S. Supreme Court justice rebuffed an appeal by a sanctioned Venezuelan businessman whose assets they seek to claim. Justice Clarence Thomas refused to hear an emergency appeal by Samark López, letting stand an order by a federal appeals court immediately turning over $53 million from the businessman's previously seized U.S. bank accounts, though the appeals court judgment is being contested.