Looks like they’re running some AI agent to try and match foreign students to social media accounts. If the US State department doesn’t like the politics of the posts the visa is being revoked. Th...
The article says "Jath Shao and other immigration attorneys view that students should seek legal counsel to help them reinstate their SEVIS or in a worse case, immigration attorneys can defend them if removal proceedings are brought against them." So it does appear there is a way for the students to contest it.