A new book delves into “the secret history of federal drug law enforcement” and the role of the Drug Enforcement Administration.  See “The Strength of the Pack: The Personalities, Politics and Espionage Intrigues that Shaped the DEA” by Douglas Valentine, TrineDay, 2009.

Former Congressional Research Service scholar Morton Rosenberg authored a detailed account of the principles and practices of congressional oversight entitled “When Congress Comes Calling” (pdf). It was published by the Constitution Project in July and is available in full-text online.