Administrative Office of the United States Courts: The Administrative Office of the United States Courts (AO) or the Administrative Office (AO) for short, is the administrative agency of the United States federal court system, established in 1939. The central support entity for the federal judicial branch, the ... (Administrative agency of the US federal court system) [88%] 2024-01-12 [1939 in American law] [Federal judiciary of the United States]...