This chilling paragraph is in a comprehensive Brookings report about the use of tech to deport people from the US:

The administration has also adapted its methods of social media surveillance. Though agencies like the State Department have gathered millions of handles and monitored political discussions online, the Trump administration has been more explicit in who it’s targeting. Secretary of State Marco Rubio announced a new, zero-tolerance “Catch and Revoke” strategy, which uses AI to monitor the public speech of foreign nationals and revoke visas of those who “abuse [the country’s] hospitality.” In a March press conference, Rubio remarked that at least 300 visas, primarily student and visitor visas, had been revoked on the grounds that visitors are engaging in activity contrary to national interest. A State Department cable also announced a new requirement for student visa applicants to set their social media accounts to public—reflecting stricter vetting practices aimed at identifying individuals who “bear hostile attitudes toward our citizens, culture, government, institutions, or founding principles,” among other criteria.