In the United States administrative law is a combination of statutes and regulations. Statutes are simply laws passed by the Legislature or Congress. They are the broad outline of the law. Then regulations are created by the administrative agencies to specifically state how the law is to be carried out. Regulations are created by a formal rule-making process that usually includes research and public comment. Once a rule is promulgated it is set up in a code. Many agencies have a quasi-judicial body that interprets the statutes and regulations, and their decisions may be published and become part of the law. Finally, state and federal appeals courts and state supreme courts and the U.S. Supreme Court may review the decisions of these agencies and come up with their own interpretation, and if their decision is published, that becomes the law.