Congressional supervision of the way the executive implements legislative mandates-\u201coversight\u201d of the bureaucracy-is one of the most complex and least understood functions of Congress. In this book, Morris Ogul clarifies the meaning of oversight and analyzes the elements that contribute to its success or neglect. Ogul's work is based on case studies from nearly one hundred interviews with congressmen, committee staff members, lobbyists, and members of the executive branch., as well as an examination of relevant congressional documents.