The federal government says it's freezing more than $2.2 billion in grants and contracts to Harvard University, since the institution said Monday it won't comply with the Trump administration's demands to limit activism on campus.

In a letter to Harvard Friday, the administration called for broad government and leadership reforms, a requirement that Harvard institute what it calls “merit-based” admissions and hiring policies as well as conduct an audit of the study body, faculty and leadership on their views about diversity. The demands, which are an update from an earlier letter, also call for a ban on face masks — which appeared to target pro-Palestinian protesters. They also pressure the university to stop recognizing or funding "any student group or club that endorses or promotes criminal activity, illegal violence, or illegal harassment.”

Harvard President Alan Garber, in a letter to the Harvard community Monday, said the demands violated the university's First Amendment rights and “exceeds the statutory limits of the government’s authority under Title VI," which prohibits discrimination against students based on their race, color or national origin.