**FILE** John Brennan, then-nominee for CIA director, testifies Feb. 7, 2013, on Capitol Hill in Washington during his confirmation hearing before the Senate Intelligence Committee. (Associated Press)
Director of National Intelligence James Clapper, center, flanked by FBI Director Robert Mueller, left, and CIA Director John Brennan, right, listen during the Senate Intelligence Committee annual open hearing on worldwide threats on Capitol Hill in Washington, Tuesday, March 12, 2013. (AP Photo/Susan Walsh)
Sen. Rand Paul, R-Ky., leaves the floor of the Senate after his filibuster of the nomination of John Brennan to be CIA director on Capitol Hill in Washington, early Thursday, March 7, 2013. (AP Photo/Charles Dharapak)
John Brennan
**FILE** John Brennan, nominee for CIA Director, testifies Feb. 7, 2013, on Capitol Hill in Washington during his confirmation hearing before the Senate Intelligence Committee. (Associated Press)
**FILE** John Brennan, then-nominee for CIA director, testifies Feb. 7, 2013, on Capitol Hill in Washington during his confirmation hearing before the Senate Intelligence Committee. (Associated Press)
Sen. Rand Paul, R-Ky., leaves the floor of the Senate after his filibuster of the nomination of John Brennan to be CIA director on Capitol Hill in Washington, early Thursday, March 7, 2013. (AP Photo/Charles Dharapak)
Sen. Rand Paul, R-Ky., leaves the floor of the Senate after his filibuster of the nomination of John Brennan to be CIA director on Capitol Hill in Washington, early Thursday, March 7, 2013. (AP Photo/Charles Dharapak)
