Director of the Federal Bureau of Investigation. The Director of the Federal Bureau of Investigation is the head of that agency (FBI) and responsible for its day-to-day operations. The FBI Director is appointed for a single 10-year term by the President and confirmed by the Senate. The current Director of the FBI is James Comey, who assumed office on September 4, 2013.
https://en.wikipedia.org/wiki/Director_of_the_Federal_Bureau_of_Investigation
Robert S. Mueller, III, September 4, 2001- September 4, 2013. Robert Mueller was nominated by President George W. Bush and became the sixth Director of the FBI on September 4, 2001. Born in New York City, Mr. Mueller grew up outside of Philadelphia. He graduated from Princeton University in 1966 and later earned a master’s degree in International Relations at New York University.
https://www.fbi.gov/history/directors/robert-s-mueller-iii
Directors, Then and Now. Since its beginning in 1908, the FBI has been led by a single individual. At first called “Chief,” this leader has been titled “Director” since the term of William Flynn (1919-1921).
https://www.fbi.gov/history/directors
The FBI Director has answered directly to the attorney general since the 1920s.‬ ‪Under the Omnibus Crime Control Act and Safe Streets Act of 1968, Public Law 90-3351, the Director is appointed by the U.S. President and confirmed by the Senate.
https://www.fbi.gov/history/directors
Robert Mueller. For the former airport in Austin, Texas, see Robert Mueller Municipal Airport. For other people with this name and similar spellings, see Robert Muller (disambiguation). Robert Swan Mueller III (born August 7, 1944) is an American lawyer. He served as the sixth Director of the Federal Bureau of Investigation (FBI).
https://en.wikipedia.org/wiki/Robert_Mueller
On June 25, 2001, Mr. Pickard was appointed Acting Director of the FBI by Attorney General John Ashcroft. More →. Louis J. Freeh, September 1, 1993 - June 25, 2001. Louis Freeh was confirmed by the Senate on August 6, 1993 and was sworn in as Director on September 1, 1993.
https://www.fbi.gov/history/directors
when was mueller the fbi director
Muller was the FBI's that is Federal Bureau of Investigation's director in September 4, 2001.  Mueller was appointed as FBI director on September 4, 2001. Mueller was the FBI director on September 4, 2001.  