The Trump administration delivered an ultimatum to leaders of Columbia University: Make a series of major changes or lose out on billions in federal aid.

The Trump administration on Thursday pressured Columbia University to make several major reforms, describing its demands as a “precondition” for potentially restoring the university’s federal funding,

A top U.S. Justice Department official says the department is investigating whether Columbia University concealed “illegal aliens” on its campus.

Columbia University says it has expelled or suspended some students who took over a campus building during pro-Palestinian protests last spring, and had temporarily revoked the diplomas of some students who have since graduated.

Ranjani Srinivasan’s student visa was revoked on March 5 for “advocating for violence and terrorism,” the Homeland Security Department said in a statement Friday.