Reuters/M.Rossi/L. Hickenbottom Pope Francis leads the First Vespers and Te Deum prayers in Saint Peter's Basilica at the Vatican December 31, 2015 and U.S. Republican presidential candidate Donald Trump (R) holds up a copy of the Bible he said his mother gave him as a youth during a campaign rally in Council Bluffs, Iowa, December 29, 2015 in a combination of file photos. Pope Francis assailed Republican presidential candidate Donald Trump's views on U.S. immigration as not Christian on Thursday, prompting the billionaire businessman to assail the religious leader as disgraceful for questioning his faith. REUTERS/Max Rossi/Lane Hickenbottom/Files TPX IMAGES OF THE DAY