Pope Francis speaks to the crowd from the Speaker's Balcony on Capitol Hill, Thursday, Sept. 24, 2015, after his address to a joint meeting of Congress. (AP Photo/Susan Walsh)
Pope Francis addresses a joint meeting of Congress on Capitol Hill in Washington, Thursday, Sept. 24, 2015, making history as the first pontiff to do so. (AP Photo/Carolyn Kaster)
Members of the House and Senate applause as Pope Francis begins his address before a joint meeting of Congress on Capitol Hill in Washington, Thursday, Sept. 24, 2015. (AP Photo/Carolyn Kaster)
Vice President Joe Biden shakes hands with Pope Francis on Capitol Hill in Washington, Thursday, Sept. 24, 2015. (AP Photo/Pablo Martinez Monsivais)
Pope Francis, accompanied by Vice President Joe Biden and House Speaker John Boehner of Ohio, blesses an unidentified child on Capitol Hill in Washington, Thursday, Sept. 24, 2015, (Michael Reynolds/Pool Photo via AP)
House Speaker John Boehner of Ohio meets with Pope Francis on Capitol Hill in Washington, Thursday, Sept. 24, 2015, as the Pope arrived before addressing a joint meeting. (Bill Clark/Roll Call/ via AP, Pool)
Pope Francis arrives in a Fiat 500L on Capitol Hill in Washington, Thursday, Sept. 24, 2015 for a speech before a joint meeting of Congress. (AP Photo/Steve Helber)
Pope Francis arrives in a Fiat 500L on Capitol Hill in Washington, Thursday, Sept. 24, 2015, for a speech before a joint meeting of Congress. (AP Photo/Steve Helber)
Pope Francis greets school children before he departs the Apostolic Nunciature, the Vatican's diplomatic mission in the heart of Washington. (AP Photo/Cliff Owen)
Pope Francis hugs a young boy while greeting school children before his departure from the Apostolic Nunciature. (AP Photo/Cliff Owen)
A Secret Service agent straightens the Papal flag on a motorcade vehicle prior to Pope Francis departure from the Apostolic Nunciature. (AP Photo/Cliff Owen)
Pope Francis became the first pope to ever address a joint meeting of Congress Thursday morning.