Soon after the Trump administration announced it was cutting billions of dollars in grants to Harvard University following a breakdown in discussions over antisemitism on campus, the Ivy League institution pulled out the biggest weapon in the federal legal arsenal: the First Amendment.

Harvard University is suing the Trump administration for threatening to withhold federal funding after the university refused to comply with demands the government outlined in a letter dated April 11,

The president of Harvard on Wednesday defended the university’s decision to sue the Trump administration, adding that the institution “cannot compromise” on core principles like the First Amendment. Harvard took legal action against the Trump administration on Monday over the government’s decision to freeze over $2 billion in federal funding meant for the university after it refused to make the reforms it ordered.