Former FBI director James Comey: A look at his career

James Comey arrives before testifying in front of the Senate Intelligence Committee on June 8, 2017.

Comey testifies before the Senate Judiciary Committee on Capitol Hill on May 3, 2017.

Comey listens to Attorney General Jeff Sessions speak about organized gang violence at the Department of Justice on April 18, 2017, in Washington.

Comey delivers the keynote remarks at the Intelligence and National Security Alliance Leadership Dinner on March 29, 2017 in Alexandria, Va.

Comey arrives to speak on national security challenges at the University of Texas on March 23, 2017, in Austin, Texas.

Comey and National Security Agency Director Mike Rogers testify during a House Intelligence Committee hearing concerning Russian meddling in the 2016 election on March 20, 2017.

Comey and National Security Agency Director Mike Rogers arrive to speak during the House Intelligence Committee hearing on Russian actions during the 2016 campaign on March 20, 2017, on Capitol Hill.

Comey leaves a closed-door meeting with senators at the U.S. Capitol on March 15, 2017.

Trump shakes hands with Comey during an Inaugural Law Enforcement Officers and First Responders Reception in the Blue Room of the White House on Jan. 22, 2017.

Comey speaks about the FBI's request to Apple to unlock the iPhone of the San Bernardino shooter during a hearing before the House Intelligence Committee on Feb. 25, 2016.

Comey appears with Homeland Security Secretary Jeh Johnson before a House Homeland Security Committee hearing on Capitol Hill on Oct. 21, 2015.

Comey speaks alongside Health and Human Services Secretary Sylvia Mathews Burwell about a national effort to crack down on Medicare fraud during a press conference at the Department of Justice on June 18, 2015, in Washington.

Comey testifies at the Senate Appropriations Subcommittee on Commerce, Justice, Science and Related Agencies hearing on the proposed budget estimates for FY2016 on Capitol Hill on March 12, 2015.

Comey speaks during a news conference on child sex trafficking at the FBI headquarters in Washington on June 23, 2014.

Comey prepares for his Senate Judiciary Committee confirmation hearing on Capitol Hill on July 9, 2013.

President Obama speaks during a news conference to announce his nomination of Comey to be FBI director in the Rose Garden on June 21, 2013.

Comey testifies during a hearing before the House Judiciary Subcommittee on Commercial and Administrative Law on May 3, 2007, on Capitol Hill.