For sedevacantists, it is Katie bar the door at the next conclave. A stubborn refrain from a subset of Catholic traditionalists accompanied the press’s bedside vigil during Pope Francis’s hospitalization. The narrative was elementary: Francis is in error. He has signaled heretical attitudes. Moreover, the Saint Gallen Gang short-circuited divine guidance by lobbying the 2013 conclave for Francis’s benefit. Thus, he is not really the pope. The Chair of Peter stands empty. It follows, the...