The law of Illinois, a state of the United States, consists of several levels, including constitutional, statutory, and regulatory law, as well as case law and local law. Illinois state law is promulgated under the Illinois State Constitution. The Illinois Compiled Statutes (ILCS) form the general statutory law. The case law of the Illinois Supreme Court and state appellate courts is currently published online under a public domain reporting system. Interpretations of law and conflicts among the various levels of law are referred to the Illinois courts in suits for application of common law. The states administrative law is published in codified form in the Illinois Administrative Code. Local ordinances are published by the respective local authorities, which are granted that authority under state law.