Ada County, Idaho v. Idaho Commission for Reapportionment, et al.

Idaho law incorporates federal constitutional law by prescribing requirements for state legislative districting. Speci cally, the Idaho Constitution prohibits a districting plan from dividing counties except when necessary to satisfy the Equal Protection Clause of the Fourteenth Amendment of the United States Constitution. In this case, the Idaho Supreme Court held that a state administrative body, the Idaho Commission for Reapportionment, makes the nal determination on the meaning of the Fourteenth Amendment, as long as its interpretation is “reasonable.” The question presented is: • Whether principles of federal supremacy and due process permit a nonjudicial state entity to reject claims of federal constitutional rights violations subject to review by a state court only for reasonableness.