A federal judge has halted President Donald Trump’s latest attempt to block international students from coming to Harvard University. The temporary restraining order issued late Thursday by US District Judge Allison Burroughs came hours after the university urged the judge to step in on an emergency basis to block a proclamation Trump signed a day earlier that suspends international visas for new students.

Harvard University is striking back against President Trump’s latest effort to prohibit international students from enrolling in the school. In a federal court filing on Thursday, Harvard argued the administration’s move is “part of a concerted and escalating campaign of retaliation by the government in clear retribution for Harvard’s exercising its First Amendment rights.