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United States Government Accountability Office

US federal government agency

  • 12 min read
  • 7 chapters

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Through Audit, Evaluation and Performance

The GAO is the supreme audit institution of the federal government of the United States. It identifies its core "mission values" as: accountability, integrity, and reliability. It is also known as the "congressional watchdog".

The agency is headed by the comptroller general of the United States. The current acting comptroller general is Orice Williams Brown, who has served in the position since December 30th 2025.

Powers of GAO

The work of the GAO is done at the request of congressional committees or subcommittees or is mandated by public laws or committee reports. It also undertakes research under the authority of the Comptroller General. It supports congressional oversight by:

  • auditing agency operations to determine whether federal funds are being spent efficiently and effectively;
  • investigating allegations of illegal and improper activities;
  • reporting on how well government programs and policies are meeting their objectives;
  • performing policy analyses and outlining options for congressional consideration;
  • issuing legal decisions and opinions;
  • advising Congress and the heads of executive agencies about ways to make government more efficient and effective.

As a result of its work, GAO produces:

  • reports and written correspondence;
  • testimonies and statements for the record, where the former are delivered orally by one or more GAO senior executives at a congressional hearing, and the latter are provided for inclusion in the Congressional Record;
  • briefings, which are usually given directly to congressional staff members;
  • legal decisions and opinions resolving bid protests and addressing issues of appropriations law, as well as opinions on the scope and exercise of authority of federal officers;
  • science and technology assessments.

The GAO also produces special publications on specific issues of general interest to many Americans, such as its report on the fiscal future of the United States, GAO's role in the federal bid protest process, and critical issues for congressional consideration related to improving the nation's image abroad.

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