Gary Cohn says prices are "not going to fall like a rock overnight" if Iran deal is signed

Gary Cohn, IBM vice chairman and the head of the National Economic Council in President Trump's first term, told "Face the Nation with Margaret Brennan" that prices are "not going to fall like a rock overnight" if a truce between the U.S. and Iran is signed because "we're going to have to see exactly what happens with the Strait" of Hormuz.