"A person who thinks only about building walls, wherever they may be, and not building bridges, is not Christian."

Trump, never one to back down from ANY fight, was quick to respond. Thus said the Donald, via a statement released by his campaign:

For a religious leader to question a person's faith is disgraceful. I am proud to be a Christian and as President I will not allow Christianity to be consistently attacked and weakened, unlike what is happening now, with our current President. No leader, especially a religious leader, should have the right to question another man's religion or faith. They are using the Pope as a pawn and they should be ashamed of themselves for doing so, especially when so many lives are involved and when illegal immigration is so rampant.