By Elisabetta Povoledo, New York TimesVERBANIA, Italy — The Vatican on Thursday excommunicated the clergy of a breakaway conservative faction of the Catholic Church, as well as any worshippers who do not leave the group. The expulsion came a day after the faction’s leaders defied a personal plea from Pope Leo XIV and consecrated four new bishops without his permission. The decree against the Society of St. Pius X excommunicated at least 750 priests. It could also affect thousands of worshippers who have not been immediately expelled but, according to the Vatican, might still be punished if they do not...