The ICAOS and the commission’s rules are binding law in all member states. The ICAOS is a contract between the states and having received the consent of Congress, it is federal law. The discussion of interstate compact law in Chapter 6 explains these long-held principles. Article XIV.A states that all state laws that conflict with the compact are superseded to the extent that they conflict with the ICAOS. Articles V and XIV.B further specify that the rules adopted by the commission have the force and effect of statutory law. Consequently, all courts and executive agencies must take all necessary measures to enforce their application. For example, in Scott v. Commonwealth, 676 S.E.2d 343, 346 (Va. Ct. App. 2009), the Virginia court was not required to give full faith and credit to an Ohio trial court judgment when the ICAOS required Virginia, not Ohio, to adjudicate his Virginia probation violation. Failure of state judicial or executive branch officials to comply with the terms of the compact and its rules would result in the state defaulting on its contractual obligations under the compact and could lead the commission to take corrective or punitive action, including a suit in federal court for injunctive relief as specified in Article XII.C of the ICAOS.
No court can order relief that conflicts with the terms and conditions of the compact or the rules established by the commission. This principle also applies to state court enforcement of the compact as federal law under the Supremacy Clause.