ICAOS is a congressionally sanctioned interstate compact enacted by all member jurisdictions. Upon congressional consent, interstate compacts and their duly promulgated rules supersede conflicting state statutes, policies, and practices.
All branches of state government, executive, legislative, and judicial, are bound to enforce and apply the compact. States may not unilaterally modify, reinterpret, or suspend compact obligations through local law, court order, or administrative practice.