A Roman Catholic archbishop in Minnesota who had been one of the hierarchy’s most vocal opponents of gay rights is the target of an investigation into allegations that he had a series of sexual relationships with priests, seminarians and other men. The investigation of Twin Cities Archbishop John Nienstedt is being conducted by a prominent Minneapolis law firm hired by the archdiocese after church officials received an allegation against Nienstedt. The archdiocese confirmed the investigation, which was first reported by Commonweal, a Catholic magazine based in New York.... Commonweal’s story cites Jennifer Haselberger, former top canon lawyer for Nienstedt, as...