Patriot Act comes into effect in the US.
Signed into law by President George W. Bush as a result of the September 11, 2001, attacks, the act is formally known as Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001. The act gave security agencies more power to deal with terrorists and terrorist activities and made it easier for them to monitor and investigate people suspected of aiding and abetting acts of terrorism. It has been criticized for its detrimental effect on civil liberties.