Sources say Scott Bloch instructed an employee to place comments on Web sites to rebut news stories that he considered negative.
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Service officials have been barred from releasing most details behind their decision.
Watchdog agency recommends Air Force reopen discussions with contractors, obtain revised proposals and make a new decision.
Budget and staffing woes blamed for dangerous security gaps at federal buildings.
Barack Obama is holding a steady 7-point lead over John McCain in Gallup's daily tracking poll.
Some of the deadlines have been imposed by Congress, while others were put in place by the current department leadership team.
Former White House political director was subpoenaed in May to testify at a July hearing on the White House's role in the firing of nine U.S. attorneys.
National environmental indicators intended to help decision-makers, public.
Soaring health care costs the budget deficit could drag the U.S. economy to the point of collapse, they warn.
Federal Protective Service struggles to furnish the people and equipment needed to keep employees safe, auditors say.