
Director of National Intelligence James R. Clapper was on Capitol Hill on Wednesday for intelligence briefings with members of Congress that included showing security camera footage of the Sept. 11 terrorist attack on the U.S. Consulate in Benghazi. (Associated Press)

Director of National Intelligence James R. Clapper was on Capitol Hill on Wednesday for intelligence briefings with members of Congress that included showing security camera footage of the Sept. 11 terrorist attack on the U.S. Consulate in Benghazi. (Associated Press)

From left: Defense Intelligence Agency Director Army Lt. Gen. Ronald Burgess, CIA Director David Petraeus and Director of National Intelligence James Clapper testify on Capitol Hill in Washington on Feb. 2, 2012, before the House Intelligence Committee hearing on worldwide threats. (Associated Press)

** FILE ** Director of National Intelligence James Clapper listens to a question while testifying on Capitol Hill in Washington on Tuesday, Jan. 31, 2012, before a Senate Intelligence Committee hearing to assess current and future national security threats. (AP Photo/Jacquelyn Martin)

Director of National Intelligence James R. Clapper on Monday announced two steps to squelch leaks of classified information after disclosures about national security. (Associated Press)

Director of National Intelligence James R. Clapper on Monday announced two steps to squelch leaks of classified information after disclosures about national security. (Associated Press)

Director of U.S. National Security James Clapper has expressed concern about Iran's uranium enrichment work. (Associated Press)

FBI Director Robert S. Mueller III (left) and Director of National Intelligence James R. Clapper testify on Capitol Hill in Washington on Tuesday, Jan. 31, 2012, at a Senate Intelligence Committee hearing to assess current and future national security threats. (AP Photo/Jacquelyn Martin)

Army Lt. Gen. Ronald Burgess (left), Defense Intelligence Agency director; CIA Director David H. Petraeus (center); and James R. Clapper, director of national intelligence, testify on Capitol Hill in Washington on Thursday, Feb. 2, 2012, at a House Intelligence Committee hearing on worldwide threats. (AP Photo/Cliff Owen)