Chuck Grassley

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Sen. Chuck Grassley (R-Iowa) in his Capitol Hill Office, Washington, D.C., Tuesday, April 29, 2014. (Andrew Harnik/The Washington Times)

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Sen. Chuck Grassley (R-Iowa) in his Capitol Hill Office, Washington, D.C., Tuesday, April 29, 2014. (Andrew Harnik/The Washington Times)

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Sen. Chuck Grassley (R-Iowa) in his Capitol Hill Office, Washington, D.C., Tuesday, April 29, 2014. (Andrew Harnik/The Washington Times)

Sen. Orrin Hatch, R-Utah, ranking Republican on the Senate Finance Committee, left, talks with Sen. Chuck Grassley, R-Iowa, on Capitol Hill in Washington, Thursday, Oct. 10, 2013, as Treasury Secretary Jacob Lew testified before the panel to urge Congress to reopen the government and lift the U.S. borrowing cap, conditions President Barack Obama insists on before he will negotiate over the nation's budget ills. (AP Photo/J. Scott Applewhite)

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Senate Judiciary Committee Chairman Sen. Patrick Leahy, D-Vt., right, listens to the Committee Ranking Member Sen. Chuck Grassley, R-Iowa, on Capitol Hill in Washington, Tuesday, Feb. 4, 2014, during the committee's hearing on data breaches and combating cybercrime. (AP Photo/Pablo Martinez Monsivais)

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Senate Judiciary Committee Chairman Sen. Patrick Leahy, D-Vt., right, listens to the Committee Ranking Member Sen. Chuck Grassley, R-Iowa, on Capitol Hill in Washington, Tuesday, Feb. 4, 2014, during the committee's hearing on data breaches and combating cybercrime. (AP Photo/Pablo Martinez Monsivais)

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Sen. Chuck Grassley of Iowa, the ranking Republican on the Senate Judiciary Committee, defends the value of the filibuster on judicial nominees, saying Democrats are trying to pack the U.S. Circuit Court of Appeals for the D.C. Circuit. (Associated Press)

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Sen. Chuck Grassley, Iowa Republican, said the loophole in the farm subsidy program "has been allowed to stand for too long" and that it is time to close it. (ASSOCIATED PRESS)