The General Accounting Office (GAO) is a legislative branch agency whose mission is to support the oversight role of Congress. Health policy issues have constituted a substantial part of GAO's recent workload. Whereas GAO's work on health has ranged broadly, it has often focused on fraud and abuse in federal programs, particularly Medicare and Medicaid; the lack of meaningful indicators and other information, particularly on outcomes in health programs; access to care, increasingly connected to managed care; quality of care; and issues related to cost control.