Donald Trump's Response to the Pope's Comments in Mexico

Pope Francis pleaded with the United States to care for migrants at its southern border, calling the "forced migration" of thousands of Central Americans a "humanitarian crisis."

Before celebrating Mass, the Pope prayed at a memorial to migrants in Juarez, Mexico, just across the border from the United States.

Pope Francis said today that GOP front-runner Donald Trump "is not Christian" if he calls for the deportation of undocumented immigrants and pledges to build a wall between the United States and Mexico.

"A person who thinks only about building walls, wherever they may be, and not of building bridges, is not Christian. This is not the gospel," the Pope said.