Tracing the history of government intrusions on Constitutional rights in response to threats from abroad, Cole and Dempsey warn that a society in which civil liberties are sacrificed in the name of national security is in fact less secure than one in which they are upheld. A new chapter includes a discussion of domestic spying, preventive detention, the many court challenges to post-9/11 abuses, implementation of the Patriot Act, and efforts to reestablish the checks and balances left behind in the rush to strengthen governmental powers.