Congressional Investigations of the Department of Justice, 1920-2007: History, Law, and Practice

Legislative oversight is most commonly conducted through congressional budget, authorization, appropriations, confirmation, and investigative processes, and, in rare instances, through impeachment. But the adversarial, often confrontational, and sometimes high profile nature of congressional investigations sets it apart from the more routine, accommodative facets of the oversight process experienced in authorization, appropriations, or confirmation exercises. While all aspects of legislative oversight share the common goals of informing Congress so as to best accomplish its tasks of developing legislation, monitoring the implementation of public policy, and disclosing to the public how its government is performing, the inquisitorial process also sustains and vindicates Congress' role in our constitutional scheme of separated powers and checks and balances. The rich history of congressional investigations from the failed St. Clair expedition in 1792 through Teapot Dome, Watergate, Iran-Contra, Whitewater, and the current ongoing inquiries into the removal and replacement of United States Attorneys, has established, in law and practice, the nature and contours of congressional prerogatives necessary to maintain the integrity of the legislative role in that constitutional scheme. A review of the historical experience and legal rulings pertinent to congressional access to information regarding the law enforcement activities of the Department of Justice indicates that in the last 85 years Congress has consistently sought and obtained deliberative prosecutorial memoranda, and the testimony of line attorneys, FBI field agents and other subordinate agency employees regarding the conduct of open and closed cases in the course of innumerable investigations of Department of Justice activities. Source: Congressional Research Service, Library of Congress

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