CNN — 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. “The Government’s attempt to coerce and control Harvard disregards … fundamental First Amendment principles,” Harvard’s lawsuit says. But while citing the Bill of Rights’ best-known guarantee is an attention-grabber – both for judges and the general public – a more arcane issue is the focus of many of the lawsuit’s 51 pages: Harvard’s claim Trump’s...