This video frame grab provided by Senate Television shows Sen. Rand Paul, R-Ky. speaking on the floor of the Senate on Capitol Hill in Washington, Wednesday, March 6, 2013. Senate Democrats pushed Wednesday for speedy confirmation of John Brennan's nomination to be CIA director but ran into a snag after a Paul began a lengthy speech over the legality of potential drone strikes on U.S. soil. But Paul stalled the chamber to start what he called a filibuster of Brennan's nomination. Paul's remarks were centered on what he said was the Obama administration's refusal to rule out the possibility of drone strikes inside the United States against American citizens.  (AP Photo/Senate Television)