This paper explores the Intelligence Community’s (IC) support to domestic security and examines the impact of this support on privacy and civil liberties. Specifically, the author examines the origin and evolution of privacy concepts in the United States, reviews historical examples where privacy collided with national security, apprise readers of IC and law enforcement cooperation, iterate advances in technology that have privacy implications, surveys current U.S. government intelligence oversight procedures, and offers thought experiments to develop recommendations for consideration by U.S. policy-makers.