A federal judge has temporarily blocked a proclamation by President Donald Trump that banned foreign students from entering the U.S. to attend Harvard University.

On Wednesday, President Donald Trump signed a directive seeking to block U.S. entry for Harvard’s international students. It marked the administration’s latest effort to squeeze Harvard’s foreign enrollment after a federal judge in Boston blocked the withdrawal of its certification to host students from overseas.

President Donald Trump signed an order blocking the entry of Harvard’s international students into the U.S., citing national security reasons.