John Cornyn

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Senate Minority Whip John Cornyn, Senate Minority Leader Mitch McConnell, second from left, and Senate Majority Leader Harry Reid head to the front of the chamber before President Barack Obama delivers his State of the Union speech on Capitol Hill in Washington, Tuesday, Jan. 28, 2014. (AP Photo/Larry Downing, Pool)

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FILE - In this Jan. 3, 2013, file photo, Rep. Steve Stockman, R-Texas, right, participates in a mock swearing-in ceremony with Speaker of the House Rep. John Boehner, R-Ohio, for the 113th Congress in Washington. Stockman, a suburban Houston Republican is mounting a long-shot challenge from the right against Senate minority whip John Cornyn but has made virtually no public appearances in Texas as questions mount about his campaign finances. Now, he’s stopped showing up for his day job, too. (AP Photo/ Evan Vucci, File)

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Senate Minority Leader Mitch McConnell of Ky., joined by Senate Minority Whip John Cornyn of Texas, right, and Sen. John Barrasso, R-Wyo., rear, talks to reporters on Capitol Hill in Washington, Tuesday, Dec. 17, 2013, following a Republican policy luncheon. (AP Photo/J. Scott Applewhite)