Harvard University announced on Monday (local time) that it has filed suit to halt a federal freeze on more than $2.2 billion in grants after the institution said it would defy the Trump administration’s demands to limit activism on campus.

“The Government has not and cannot identify any rational connection between antisemitism concerns and the medical, scientific, technological, and other research it has frozen that aims to save American lives, foster American success, preserve American security, and maintain America’s position as a global leader in innovation,” said the lawsuit, filed in Boston federal court.