Wow. This DHS letter from Kristi Noem to Harvard is pretty extraordinary. Not only does it prohibit Harvard from enrolling foreign students moving forward, any currently enrolled foreigners will have to transfer to other universities to maintain their status:

"This decertification also means that existing aliens on F- or J- nonimmigrant status must transfer to another university in order to maintain their nonimmigrant status."

Noem's letter claims that Harvard has refused to comply with multiple DHS requests for information about its foreign student population's harassment of Jewish students as well as its DEI initiatives. They have 72 hours to comply or the prohibition will remain.

This would basically be a death penalty for Harvard as a top global academic institution.