U.S. State Department's Guantanamo envoy resigns

By Matt Spetalnick WASHINGTON (Reuters) - The State Department envoy responsible for negotiating prisoner transfers from the U.S. military prison at Guantanamo Bay, Cuba, is resigning, officials said on Monday, even as President Barack Obama is promising a stepped-up push to close the facility. The surprise announcement of Clifford Sloan’s departure followed a flurry of detainee repatriations and resettlements, though officials at the State Department and White House had made clear their frust