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WASHINGTON, DC - MAY 10: Sen. Lindsey Graham (R-SC) speaks with reporters before a weekly policy meeting with Senate Republicans, at the U.S. Capitol, May 10, 2016, in Washington, DC. Presidential candidate Donald Trump is scheduled meet with Republican House and Senate leadership on Thursday. (Photo by Drew Angerer/Getty Images)

WASHINGTON, DC - MAY 10: Sen. Lindsey Graham (R-SC) speaks with reporters before a weekly policy meeting with Senate Republicans, at the U.S. Capitol, May 10, 2016, in Washington, DC. Presidential candidate Donald Trump is scheduled meet with Republican House and Senate leadership on Thursday. (Photo by Drew Angerer/Getty Images)