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Serbian Eastern Orthodox Diocese v. Milivojevich, 423 U.S. 696 (1976). The Court observed: “[W]hether or not there is room for `marginal civil court review' under the narrow rubrics of `fraud' or `collusion' when church tribunals act in bad faith for secular purposes, no `arbitrariness' exception—in the sense of an inquiry whether the decisions of the highest ecclesiastical tribunal of a hierarchical church complied with church laws and regulations—is consistent with the constitutional mandate that civil courts are bound to accept the decisions of the highest judicatories of a religious organization of hierarchical polity on matters of discipline, faith, internal organization, or ecclesiastical rule, custom or law. For civil courts to analyze whether the ecclesiastical actions of a church judicatory are in that sense `arbitrary' must inherently entail inquiry into the procedures that canon or ecclesiastical law supposedly require the church adjudicatory to follow, or else into the substantive criteria by which they are supposedly to decide the ecclesiastical question. But this is exactly the inquiry that the first amendment prohibits . . . .”