URBANA, Ill. (AP) — A lawsuit is accusing the University of Illinois of violating its students’ free-speech rights. Virginia-based Speech First filed the lawsuit last week against Illinois in U.S. District Court in Urbana. It accuses the university of squelching free speech by requiring “prior approval” for posting leaflets. It also claims the university uses bias response teams that intimidate students into silence. A spokeswoman says the university hasn’t received official notice of the lawsuit.