Mystery surrounds costly spy programWASHINGTON (AP) -- Congress' new blueprint for U.S. intelligence spending includes a mysterious and expensive spy program that drew extraordinary criticism from leading Democrats, with one saying the highly classified project is a threat to national security.In an unusual rebuke, Sen. Jay Rockefeller, the senior Democrat on the Senate Intelligence Committee, complained Wednesday that the spy project was "totally unjustified and very, very wasteful and dangerous to the national security." He called the program "stunningly expensive."Rockefeller and three other Democratic senators -- Richard Durbin, Carl Levin and Ron Wyden -- refused to sign the congressional compromise...