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UNITED STATES - JULY 29: Sen. Richard Shelby, R-Ala., arrives in the Capitol via the Russell Senate subway for votes on Wednesday, July 29, 2015. Also on the train is Sen. Pat Leahy, D-Vt. (Photo By Bill Clark/CQ Roll Call)

UNITED STATES - JULY 29: Sen. Richard Shelby, R-Ala., arrives in the Capitol via the Russell Senate subway for votes on Wednesday, July 29, 2015. Also on the train is Sen. Pat Leahy, D-Vt. (Photo By Bill Clark/CQ Roll Call)

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