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.

Columbia University’s board of trustees has been torn over how to respond to President Trump’s escalating demands as the Ivy League school faces a deadline to try to restore $400 million in federal funding that hangs in the balance over campus antisemitism allegations.

The Trump administration has delivered an extraordinary ultimatum to Columbia University, threatening to permanently end federal funding to the school unless it cedes control of an international studies department and implements sweeping changes to other policies.