APA == the Administrative Procedure Act, enacted by Congress in 1946.
An unreliable source writes, "litigants frequently use the Administrative Procedure Act to argue that an agency acted in an arbitrary and capricious manner, failed to follow required notice-and-comment procedures, or exceeded its statutory authority."
An unreliable source writes, "litigants frequently use the Administrative Procedure Act to argue that an agency acted in an arbitrary and capricious manner, failed to follow required notice-and-comment procedures, or exceeded its statutory authority."