NEW : Greg Stokes and David Chaney are no longer with the Secret Service , a source says . U.S. congressmen offered similarly biting remarks . Comment: They were the two supervisors with the Secret Service members in Colombia . NEW : Chaney declined to comment to reporters outside his Virginia home . 8 other Secret Service agents and 10 U.S. troops are also under investigation .
NEW : Greg Stokes and David Chaney are no longer with the Secret Service , a source says . Comment: They were the two supervisors with the Secret Service members in Colombia . NEW : Chaney declined to comment to reporters outside his Virginia home . 8 other Secret Service agents and 10 U.S. troops are also under investigation .