
This video frame grab provided by Senate Television shows Sen. Rand Paul, Kentucky Republican, speaking on the floor of the Senate on Capitol Hill in Washington on Wednesday, March 6, 2013. Senate Democrats pushed Wednesday for speedy confirmation of John O. Brennan's nomination to be CIA director but ran into a snag after Mr. Paul began a lengthy filibuster over the legality of potential drone strikes on U.S. soil. (Associated Press/Senate Television)

Sen. Rand Paul, Kentucky Republican, is now “the man to beat in 2016,” a Republican strategist said, after delaying a vote Wednesday on CIA nominee John O. Brennan with an old-style one-man filibuster. (Associated Press)

Sen. Rand Paul, Kentucky Republican, is now “the man to beat in 2016,” a Republican strategist said, after delaying a vote Wednesday on CIA nominee John O. Brennan with an old-style one-man filibuster. (Associated Press)

Sen. Rand Paul, Kentucky Republican, is now “the man to beat in 2016,” a Republican strategist said, after delaying a vote Wednesday on CIA nominee John O. Brennan with an old-style one-man filibuster. (Associated Press)

Sen. Rand Paul, Kentucky Republican, is now “the man to beat in 2016,” a Republican strategist said, after delaying a vote Wednesday on CIA nominee John O. Brennan with an old-style one-man filibuster. (Associated Press)

This video frame grab provided by Senate Television shows Sen. Rand Paul, Kentucky Republican, speaking on the floor of the Senate on Capitol Hill in Washington on Wednesday, March 6, 2013. Senate Democrats pushed Wednesday for speedy confirmation of John O. Brennan's nomination to be CIA director but ran into a snag after Mr. Paul began a lengthy filibuster over the legality of potential drone strikes on U.S. soil. (Associated Press/Senate Television)

John O. Brennan answers questions from senators Thursday about drones, media leaks and other matters during his confirmation hearing to be CIA director. (Andrew Harnik/The Washington Times)

John O. Brennan answers questions from senators Thursday about drones, media leaks and other matters during his confirmation hearing to be CIA director. (Andrew Harnik/The Washington Times)

John O. Brennan answers questions from senators Thursday about drones, media leaks and other matters during his confirmation hearing to be CIA director. (Andrew Harnik/The Washington Times)