Harvard University expanded its lawsuit Tuesday against the Trump administration for freezing billions of dollars in federal funds, ratcheting up the high-stakes legal battle between the wealthiest US university and the White House.

Harvard University expanded its lawsuit challenging the Trump administration's moves to cut off billions of dollars in federal funding to the Ivy League school on Tuesday after officials said they are terminating an additional $450 million in grants.

The Trump administration has cut another $450 million in grants to Harvard University, on top of $2.2 billion in funding the administration froze last month. The administration accused the university of failing to act on antisemitism and racial discrimination against white people,