STATUTORY AUTHORITY refers to the powers and duties assigned to a government official or agency through a law passed by Congress or a state legislature. It is also known as a statutory grant of authority.
ADMINISTRATIVE AUTHORITY means the elected or appointed official or board having jurisdiction over a function or activity.
JUDICIAL AUTHORITY means any court, arbitrator, special master, receiver, tribunal, or a similar body of any kind (including any Governmental Authority exercising judicial powers or functions of any kind).
What's the difference?
The United States Code (USC) is the official record of the laws passed by Congress.
The Code of Federal Regulations (CFR) is the official record of the interpretations of the USC by the relevant departments.