United States Federal Courts
United States In the administrative law context in the United States, the requirement that mandamus can be used only to compel a ministerial act has largely been abandoned. By statute or by judicial expansion of the writ of mandamus in most of the U.S. states, acts of administrative agencies are now subject to judicial review for abuse of discretion. Judicial review of agencies of the United States federal government, for abuse of discretion, is authorized by the U.S. Administrative Procedure Act. Federal courts The authority of the United States district courts (trial courts) to issue mandamus has been expressly abrogated by Rule 81(b) of the Federal Rules of Civil Procedure, but relief in the nature of mandamus can be had by other remedies provided for in the Rules, where provided by statute, or by use of the district courts' equitable powers. In the context of mandamus from a United States court of appeals to a district court, the Supreme Court has ruled that the appellate court...