El Salvador has agreed to house violent US criminals and receive deportees of any nationality, US Secretary of State Marco Rubio announced Monday, in an unprecedented – and legally problematic deal – that has alarmed critics and rights groups.

U.S. Secretary of State Marco Rubio left El Salvador on Tuesday with an agreement from that country’s president to accept deportees from the U.S. of

A U.S. official said the Trump administration had no plans to try to deport American citizens. The U.S. government cannot deport American citizens and such a move would be met with legal challenges.