WASHINGTON (AP) - Donald Trump says a religious leader questioning a person's faith is "disgraceful," responding forcefully to comments from Pope Francis that anyone who wants to build a border wall isn't a Christian.

The Republican candidate for president says Thursday the Pope should wish that he is elected to the White House, and he accused the Mexican government of using Francis as a "pawn" and says the leader of the Roman Catholic Church "only heard one side of the story."

Pope Francis spoke as he traveled home from a visit to Mexico. When asked about Trump's promise to build a wall along the U.S.-Mexican border, Francis said: "A person who thinks only about building walls, wherever they may be, and not building bridges, is not Christian."

Trump replied to the Pope during a campaign stop in Kiawah Island, South Carolina. He says, "If and when the Vatican is attacked by ISIS, which as everyone knows is ISIS's ultimate trophy, I can promise you that the Pope would have only wished and prayed that Donald Trump would have been president."

Trump went on to say, "for religious leader to question a person's faith is disgraceful."

"No leader, especially a religious leader, should have the right to question another man's religion or faith," Trump says.

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