Why it's problematic to have 2 popes weighing in on key issues for Catholic Church

Rome is being roiled by a series of unusual developments in which a former pope appeared to be weighing in on a sensitive issue facing his successor, Pope Francis. The debate is over the law of clerical celibacy, which divides many Catholics. But now, the retired pope, Benedict, is distancing himself from the controversy. Father Thomas Reese of Religion News Service joins Amna Nawaz to discuss.