A divided U.S. Supreme Court today effectively upheld Highland Park’s ban on assault weapons.The high court declined to hear arguments that the North Shore suburb’s prohibition on possessing assault weapons and large-capacity magazines violates the Second Amendment.Two justices contended the court should have granted the petition for a writ of certiorari filed by Dr. Arie S. Friedman and the Illinois State Rifle Association.The central holding in District of Columbia v. Heller, 554 U.S. 570 (2008), was the …