National Security Investigations and Prosecutions presents the law governing, and related to, National Security Investigations (NSIs). An NSI is an investigation conducted by the United States government to acquire information about foreign threats to the national security, e.g., international terrorism.

National security law is often inaccessible, and can be particularly hard to follow when divorced from the context of historical tradition, governmental structures, and the operational reality in which it functions. This treatise explores the full background of NSIs, both from a pre-911 and a post-911 perspective, providing a powerful tool for any attorney handling a case involving a national security investigation or prosecution.

The text includes:

• Explains the federal governments power and limits on that power, in the area of NSIs
• Describes the investigative tools available to the government, explaining how they work and how they can be challenged
• Provides step-by-step guidance for companies regarding civil and criminal liability for actions involving electronic surveillance
• Covers laws that apply and issues that arise, when an NSI leads to prosecution or other litigation