The Trump administration is trying to block Harvard from enrolling international students. A Harvard official said the move is already creating major disruptions.

Harvard University won a reprieve in its fight to enrol international students, after the Trump administration appeared to walk back its initial decertification and a federal judge upheld a block on the government's order.

The administration’s action was illegal and would cause irreparable harm, because about a quarter of Harvard students are from other countries, lawyers argued.