The front-runners campaign Tweeted an image illustrating the Vatican is surrounded by walls. SUBSCRIBE to ABC NEWS: .<br />On Thursday, Pope Francis criticized Donald Trump by saying the GOP frontrunner is not Christian for his stance on immigration. Francis told a reporter on a .<br />Republican presidential candidate Donald Trump responds to Pope Francis after he said Trump might not be a true Christian. He blames Mexico for letting the .<br />SUBSCRIBE Donald Trump vs. Everyone: His Best Insults Donald Trumps Latest Insults .
