The Senate unanimously confirmed Mueller as FBI director on August 2 , 2001 , voting 98 – 0 in favor of his appointment . He had previously served as acting deputy attorney general of the United States Department of Justice ( DOJ ) for several months before officially becoming the FBI director on September 4 , 2001 , just one week before the September 11 attacks on the World Trade Center and the Pentagon
September 11 attacks
September 11 attacks
Robert Mueller