Mueller Takes Over Russia Probe; Trump Denies Collusion

On the night of March 10, 2004, Deputy Attorney General James Comey and FBI Director Robert Mueller sped to George Washington University Hospital and stopped two of President George W. Bush’s aides from getting the signature of Attorney General John Ashcroft, gravely ill, on a legally dubious National Security Agency domestic wiretapping program. 

The next day, Comey and Mueller went to the White House and threatened to resign. President Bush conceded and told his aides the wiretapping program had to comply with the law. When Mueller retired from the FBI in 2013, Comey replaced him.