() Chinese students with ties to their country’s Communist Party or “studying in critical fields” will have their visas revoked, U.S. Secretary of State Marco Rubio said on social media Wednesday.

Rubio’s statement on X and through his department comes as the Trump administration is engaged in a trade war with China and as it directs U.S. embassies and consulates to pause scheduling visa interviews for international students while considering ways to revise social media screening and vetting for applicants.

“Under President Trump’s leadership, the U.S. State Department will work with the Department of Homeland Security to aggressively revoke visas for Chinese students, including those with connections to the Chinese Communist Party or studying in critical fields,” Rubio said. “We will also revise visa criteria to enhance scrutiny of all future visa applications from the People’s Republic of China and Hong Kong.”