Graham on Iran deal: ‘I think it’s going to fail’

Sen. Lindsey Graham (R-S.C.) on Sunday said he thinks the tentative deal between the U.S. and Iran will fail. "If you don't have a diplomatic path through the MOU, then you have to go to war, or some other form of coercion," Graham told "Face the Nation" host Margaret Brennan, referring to the memorandum of...