As the United States approaches the 70th anniversary of its modern national security apparatus, this volume summarizes a public administration study of the effects of the mid-1970's intelligence oversight reforms. While some chapters are deeply academic in their writing style, the analysis and recommendations are presented more practically. This quantitative study analyzes the changes in intelligence outcomes between two 29-year periods. The first period explores the intelligence oversight arrangement between the National Security Act of 1947 and the Church and Pike Committees of 1975-76. The second period examines the effects of the intelligence committees in the House and Senate on intelligence outcomes through the Intelligence Reform and Terrorism Prevention Act of 2004. The intelligence outcomes explored in the study include: intelligence failures, military conflicts, espionage cases, and leaks.