The Supreme Court on Friday allowed President Donald Trump’s administration to suspend a Biden-era humanitarian parole program that allowed half a million immigrants from Cuba, Haiti, Nicaragua, and Venezuela to temporarily live and work in the United States.

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

Migrants from Cuba, Haiti, Nicaragua and Venezuela who entered the United States legally under a Biden-era program are now scrambling.