President Trump Threatened to Turn Back Caravan Migrants If They Don’t Claim Asylum in Mexico. That’s Not Legal

President Donald Trump has said the Central American migrants traveling via caravan should seek asylum in Mexico – and threatened that they will be turned away if they reach the U.S. border.

"People have to apply for asylum in Mexico first, and if they fail to do that, the U.S. will turn them away. The courts are asking the U.S. to do things that are not doable!" he tweeted Sunday.

But following through on that threat could violate international law, experts say.