auditing and accounting agency which aids Congress and other government bodies (USA)
an independent nonpartisan federal agency that acts as the investigative arm of Congress making the executive branch accountable to Congress and the government accountable to citizens of the United States
General Accounting Office: reports to Congress on the fiscal propriety and cost-effectiveness of federally-funded programs as well as the potential cost-effectiveness of proposed federal programs (Individual states may have equivalent bodies called Legislative Budget Bureaus or Boards )