The decision lets the Trump administration end, for now, a program that let migrants from Cuba, Haiti, Nicaragua and Venezuela live and work in the U.S. for up to two years.

The court again showed its willingness to back his hardline approach to immigration while signaling reservations with how he is carrying it out.

An appeal that landed at the Supreme Court Tuesday could test the justices’ emerging concern about President Donald Trump’s aggressive deportation policies and whether he is willing to defy judicial orders.