National Security

Traveling U.S. presidents get a flight restriction with a radius that spans 30 nautical miles. When pilots fly inside that airspace, they risk being intercepted by the Air Force.

Michael Flynn stepped down as national security adviser following reports he communicated with Russia about U.S. sanctions in December and then misled the vice president-elect about that discussion.

Under the USA Freedom Act, the NSA can no longer collect phone call metadata without a court order. Metadata remain with private phone carriers but can be subpoenaed by the government.

Unable to overcome parliamentary maneuvers by Sen. Rand Paul, the Senate adjourned and let three provisions of the Patriot Act expire at midnight.

Three key provisions of the act sunset on June 1. The Senate has scheduled a rare Sunday session to try to pass a House measure that modifies some of the provisions.

If you haven't been paying attention, here's a primer on the changes Congress is considering making to U.S. surveillance practices.

A three-judge panel said Congress did not intend to give the National Security Agency the authority to collect metadata about Americans' phone records in bulk when lawmakers wrote the Patriot Act.

David Rothkopf takes two presidents to task in his new nook "National Insecurity: American Leadership in the Age of Fear." Chiding both President Obama…