A day after Harvard sent a letter refuting the government’s claims against it, federal officials announced the $450 million cut on Tuesday. Then Harvard amended its lawsuit.

The lawsuit sets up a legal showdown between America’s most prominent university and the president of the United States, who has been on an escalating campaign to reorder elite higher education.

Harvard University sued the Trump administration Monday in a new escalation of the fight over institutional oversight, independence and federal funding for the Ivy League school.