WASHINGTON, April 12 (Reuters) - A U.S. judge on Tuesday declined to jail two men accused of impersonating federal agents and supplying Secret Service personnel with gifts, dealing a blow to prosecutors who had argued that the defendants pose a danger and should be detained. "There's been no showing that national security information has been compromised," U.S. Magistrate Judge Michael Harvey said. Harvey ordered both men to remain in home confinement, subject to GPS monitoring, with their parents and that they surrender their passports and stay away from airports and embassies. Harvey agreed to stay his order until Wednesday morning...