The Trump administration has announced new immigration rules to deny asylum to anyone who enters the country outside of a port of entry. The American Civil Liberties Union called the move illegal, saying, “U.S. law specifically allows individuals to apply for asylum whether or not they are at a port of entry. It is illegal to circumvent that by agency or presidential decree.” Trump, who turned the Central American caravans traveling to the U.S.-Mexico border into a major campaign issue in the lead-up to the midterm elections, is expected to announce which countries will be affected by the rules today. Trump, invoking national security concerns, plans to use the same legal provision the White House used to push the travel ban last year.

This comes as new court filings show there are still 171 children separated from their families in U.S. custody, more than four months after a judge ordered the Trump administration to reunite all families that were separated at the U.S.-Mexico border.