Prospective international students to the U.S. were dealt another blow when U.S. embassies were ordered not to schedule any new student visa interviews while the Trump Administration prepares to expand its vetting of applicants’ social media profiles.

The move could have a major impact on the international student population in the U.S. – a quarter of which was made up of students from China last year.

The Trump administration is also considering a policy requiring foreign student visa applicants to undergo social media screening.