Administrative law is constituted by that body of regulations, rules, orders, decisions, and policies that carry out the regulatory powers created of administrative agencies. In ordinary use, as contrasted with technical legal use, people often speak of administrative law as "regulation." For example, it is often pointed out that it is easier for regulatory agencies, such as U.S. Environmental Protection Agency or the U.S. Occupational Safety and Health Administration to update their regulations than it is to get Congress to pass new laws. In the technical legal sense, regulation is law. It has "the force of law." It differs from legislation only in that such matters as the legal limit on some substance may be changed by regulators (because of better scientific studies on its effects, for example) without going back to legislators for new legislation. Administrative law, like all other forms of law, is subject to assessment and criticism in terms of ethics and justice. See also CIVIL LAW and CRIMINAL LAW.