Pope Francis speaks during a meeting with the media onboard the papal plane while en route to Rome, Italy February 17, 2016 and Donald Trump (R) speaks at a campaign rally in Portsmouth, New Hampshire February 4, 2016 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/POOL