PHILADELPHIA, PA - SEPTEMBER 27: Pope Francis celebrates Mass during the World Meeting of Families on September 27, 2015 in Philadelphia, Pennsylvania. The pope returns to Rome this evening. (Photo by Carl Court/Getty Images)
PHILADELPHIA, PA - SEPTEMBER 27: Pope Francis celebrates Mass during the World Meeting of Families on September 27, 2015 in Philadelphia, Pennsylvania. The pope returns to Rome this evening. (Photo by Carl Court/Getty Images)