Lindsey Graham to Trump: "Stop being a jackass"
Sen. Lindsey Graham, one of Donald Trump's rivals for the Republican nomination, is a close friend of Sen. John McCain. Graham was with McCain Monday at a town hall in New York where they discussed the Iran nuclear deal. Graham, who recently retired from the Air Force reserve, joins "CBS This Morning" to discuss Trump's recent remarks about the former Vietnam prisoner of war and the Iran nuclear deal.