The PATRIOT Act, officially known as the USA PATRIOT Act, was enacted in response to the September 11, 2001 terrorist attacks. Its primary goal is to enhance national security by expanding the government's surveillance and investigative powers. This includes measures such as allowing law enforcement to monitor communications and access personal records more easily. The act has been controversial, as it raises concerns about civil liberties and privacy rights. Critics argue that some provisions may infringe on individual freedoms, while supporters believe it is essential for preventing terrorism. The PATRIOT Act has undergone several revisions and renewals since its initial passage.