JOINT BASE ANDREWS, MD - SEPTEMBER 22:  Pope Francis shakes hands with Vice President Joe Biden along with 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 Chip Somodevilla/Getty Images)