The Department of Defense has ordered 30 U.S. universities to audit their partnerships with mostly Chinese universities and military training institutions as President Donald Trump's administration scrutinizes the country’s growing global influence.

The Trump administration has thrown up new obstacles for international students, from travel bans to a pause in visa appointments and new layers of vetting.

More than 1,000 international students at 128 colleges and universities have had their visas revoked or their legal status terminated since mid-March.