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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)

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