JOINT BASE ANDREWS, MD - SEPTEMBER 22: (AFP OUT) Pope Francis (R) is greeted by U.S. President Barack Obama, first lady Michelle Obama and other political and Catholic church leaders after arriving from Cuba September 22, 2015 at Joint Base Andrews, Maryland. Francis will be visiting Washington, New York City and Philadelphia during his first trip to the United States as Pope. (Photo by Olivier Douliery-Pool/Getty Images)