Offended by a depiction of the Prophet Muhammad etched in marble inside the U.S. Supreme Court chamber, a coalition of Muslim organizations is quietly pushing to have the artwork sandblasted into propriety. A petition signed by 16 groups across the country has asked that the larger-than-life frieze of great lawgivers be altered "in the spirit of religious tolerance and pluralism" because Islamic tradition discourages artistic renderings of people, and showing the face of Muhammad is considered particularly offensive. The Supreme Court refused to comment publicly on the controversy, but coalition spokesman Nihad Awad said there already has been one "fruitful"...