USA Patriot Act
A federal law (Public Law 107-56) enacted in response to terrorist attacks on the World Trade Center and the Pentagon on September 11, 2001. The law, officially titled the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act, substantially broadened the investigative authority of law enforcement agencies throughout America and is applicable to many crimes other than terrorism. The law was slightly revised and reauthorized by Congress in 2006.