Pope Francis to visit New York, Philadelphia and D.C.

Pope Francis has laid out plans to visit the U.S. In a preview of the kind of message he'll be bringing, he said he would have liked to enter the U.S. by way of the Mexican border. He's also expected to address Congress and the U.N. with a message that will probably please and trouble in equal measure. Allen Pizzey gives a preview of the pope's visit.