From the Summary: "This report provides an overview of federal government corporations, a category currently consisting of some 18 corporate agencies performing functions assigned to them in law. A government corporation, as defined in this report, is an agency of government, established by Congress to provide a market-oriented public service and intended to produce revenues that meet or approximate its expenditures. Corporations cover the spectrum in size and function from large, well-known entities, such as the U.S. Postal Service and the Federal Deposit Insurance Corporation, to small, low-visibility corporate bodies, such as the Federal Financing Bank in the Department of the Treasury and Federal Prison Industries (UNICOR) in the Department of Justice. […] Within the executive branch, there is little central management agency oversight or supervision of government corporations as a class of agency. Congress, at present, does not conduct comprehensive management oversight of government corporations by a single committee, preferring instead that oversight be performed by subject-field committees on a corporate-specific basis. The need for the executive branch and Congress to develop new organizational structures that take into account both the public law requirements of governmental status, and the flexibility that properly accompanies corporate bodies dependent upon revenues for services, will probably increase, rather than diminish, thereby ensuring the continuing attraction of the government corporation option. This report will be updated annually."
CRS Report for Congress, RL30365