FILE - In this Feb. 7, 2013, file photo John Brennan, CIA Director nominee, testifies before the Senate Select Intelligence Committee during his confirmation hearing on Capitol Hill in

 

              FILE - In this Feb. 7, 2013, file photo John Brennan, CIA Director nominee, testifies before the Senate Select Intelligence Committee during his confirmation hearing on Capitol Hill in
FILE - In this Feb. 7, 2013, file photo John Brennan, CIA Director nominee, testifies before the Senate Select Intelligence Committee during his confirmation hearing on Capitol Hill in Washington. Brennan was confirmed after the Obama administration bowed to demands from Republicans, stating that there are limits on President Barack Obama's power to use drones against U.S. terror suspects on American soil. White House attempts to lift the cloak of secrecy over its use of armed drones have only raised more questions about the counterterrorism program, particularly Obama's legal authority to kill American citizens. (AP Photo/Manuel Balce Ceneta, File)