A Louisiana immigration judge has ruled that the U.S. can deport Mahmoud Khalil based on the federal government’s argument that he poses a national security risk. His lawyers are expected to appeal, and a federal judge in New Jersey has temporarily barred Khalil’s removal from the country.

A federal judge on Friday ruled that the Trump administration can deport Columbia University graduate student Mahmoud Khalil just a month after his arrest prompted national outrage and marked the start of the federal government’s broader crackdown on foreign students.