Can we safeguard our nation's security without weakening cherished liberties? And how does technology affect the potential conflict between these fundamental goals? These questions acquired renewed urgency in the wake of the 9/11 attacks. They also spurred heated debates over such controversial measures as Total Information Awareness and the USA PATRIOT Act. In this volume, leading figures from the worlds of government, public policy, and business analyze the critical issues underlying these debates. The first set of essays examines the relationship between liberty and security and...