Sedevacantism, American Catholicism's only homegrown "new religious movement" (NRM), argues that the Catholic Church has sunk into heresy at the hands of false popes. It sits at the extremes of two growing phenomena: Traditionalist Catholicism and Independent Catholicism. The only Roman Catholic bishop ever to espouse Sedevacantism was Archbishop Pierre Martin Ng -dinh-Thục -- but who was he? ARCHBISHOP THỤC, Godfather of Vietnam's...