A unit of government charged with the administration of particular laws. In the United States, those most important for administering laws related to international trade are the ITC and ITA.
An administrative agency is a governmental body, usually part of the executive branch, charged with implementing particular laws enacted by Congress. In the environmental law context, administrative agencies such as the Environmental Protection Agency typically frame highly specific and specialized regulations to implement the laws and are responsible for enforcing compliance with these regulations.
a governmental authority, other than a court and other than a legislative body, which affects the rights of private parties through either adjudication or rulemaking