President Donald Trump called on the nation’s universities and colleges to crack down on what he called “illegal protests” in a social media post early Tuesday.

Trump threatened to halt all federal funding for any institution of higher education that allows "illegal protests," vowing to imprison "agitators."

President Trump threatened to take away federal funds from universities that allow what he called “illegal protests,” a move legal experts say would violate the First Amendment. Trump didn’t explain which demonstrations he considered illegal in his social-media post Tuesday morning.