By Brad Miner, The Catholic Thing - One of America’s leading canon lawyers, Edward N. Peters, has written: “If her prolonged public conduct does not qualify as obstinate perseverance in manifest grave sin, then, in all sincerity, I must admit to not knowing what would constitute obstinate perseverance in manifest grave sin.” His point of reference is to a passage in Canon 915: “Those upon whom the penalty of excommunication or interdict has been imposed or declared, and others who obstinately persist in manifest grave sin , are not to be admitted to Holy Communion.”