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UNITED STATES - AUGUST 10: Presidential candidate Sen. Lindsey Graham (R-SC) holds a town hall meeting on the Iran nuclear agreement in Greenville, S.C., on Monday, Aug. 10, 2015. (Photo By Bill Clark/CQ Roll Call)

UNITED STATES - AUGUST 10: Presidential candidate Sen. Lindsey Graham (R-SC) holds a town hall meeting on the Iran nuclear agreement in Greenville, S.C., on Monday, Aug. 10, 2015. (Photo By Bill Clark/CQ Roll Call)

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