Hispanics are the fastest-growing evangelical group in the country right now, an important constituency. But Trump's views, especially his views on immigration, did not exactly go over well with this faith constituency. Rev. Rodriguez told me that Trump's invitation created something of a stir in his world.

Administration officials, in fact, have repeatedly condemned ISIS for its treatment of religious minorities, including Christians. But a bipartisan resolution now moving through Congress calls on the administration to go further and say ISIS is guilty of genocide.

At one congressional hearing, Bishop Francis Kalabat complained that administration officials are overlooking what's happening to his fellow Chaldean Christians.

The letter writers span the spectrum from left to right. Members say they don't want this to become a partisan political issue. In fact, there are reasons administration officials have been cautious in making a genocide declaration.

State Department lawyers need to have the evidence to back up the charge before they make it. Here's Nebraska Republican Jeff Fortenberry questioning Assistant Secretary of State Anne Patterson at a House hearing.

Fidel Castro outlasted U.S. presidents determined to overthrow him, survived the collapse of the communist bloc that sustained him and outlived many of those who wanted to replace him. For those reasons, he will go down in history as among the world's most skillful politicians, even if his achievements largely die with him.

Trump has always talked about how important in dealing with foreign leaders, how important it is to establish a good personal relationship very close to what Pope Francis says, so they may both really want to emphasize their development of a personal relationship.