The State Department plans to review the social media accounts of foreign citizens who apply for student and visiting scholar visas as it resumes processing those applications.

Applicants will be screened for perceived “hostility” toward the United States, and they will be asked to make their social media accounts “public” for the review, State Department officials said on Wednesday.

All applications for F, M and J nonimmigrant visas, which are for scholarly exchanges and research, will be reviewed, the officials said.

Consular officers at missions overseas are being told to look for “any indications of hostility toward the citizens, culture, government, institutions or founding principles of the United States.” The State Department did not provide further details on how officers would define that criteria.

The agency issued the guidelines after halting the processing of student and visiting scholar visas for nearly a month.

The new policy appears to be the latest prong in the Trump administration’s broad assault on universities, which is focused on trying to tamp down liberal thought at the institutions. Some of President Trump’s aides say American universities need to embrace more conservative ideas and people.