The USA PATRIOT Act (Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001, Pub. L. 107-56) is a United States federal statute signed into law by President George W. Bush on 26 October 2001, approximately six weeks after the September 11 Attacks. The law significantly expanded the surveillance, investigative, and detention authorities of federal law enforcement and intelligence agencies, primarily in the areas of electronic surveillance, financial monitoring, immigration enforcement, and intelligence sharing. Whether the Act represents a necessary and proportionate national security measure or an unconstitutional overreach into civil liberties is a matter of sustained public, legal, and scholarly debate.
The Act was drafted and passed with unusual speed following the 11 September 2001 attacks on the United States. Congress passed it with wide bipartisan margins - 98-1 in the Senate and 357-66 in the House of Representatives. The legislation amended more than fifteen existing federal statutes, including the Foreign Intelligence Surveillance Act (FISA) of 1978, the Electronic Communications Privacy Act, the Money Laundering Control Act, and the Immigration and Nationality Act.
Key provisions of the Act include:
The Act contained sunset clauses for several provisions, which Congress has periodically renewed, allowed to expire, or modified. The USA FREEDOM Act of 2015 significantly revised bulk telephone metadata collection under Section 215 following disclosures by former NSA contractor Edward Snowden in 2013. Several provisions lapsed definitively in March 2020 when Congress failed to reauthorize them.
For the legislative and legal history of the Act's passage, modifications, and court challenges, see USA PATRIOT Act - History.
Scholarly and legal debate over the PATRIOT Act centers on several enduring questions: whether its surveillance authorities produced counterterrorism results proportionate to their civil liberties costs; whether judicial oversight mechanisms such as the FISC provided meaningful checks on executive authority; and whether the Act's information-sharing provisions helped prevent subsequent attacks or primarily enabled domestic political surveillance. The 2013 Snowden disclosures substantially altered public and congressional assessments of the scope of surveillance conducted under the Act's authority, revealing collection programs whose scale had not been publicly known. Courts have reached varying conclusions on the constitutionality of specific provisions; the Second Circuit Court of Appeals held in 2015 that bulk telephone metadata collection under Section 215 exceeded statutory authority, though it declined to rule on constitutional grounds.
1. Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism (USA PATRIOT Act) Act of 2001, Pub. L. No. 107-56, 115 Stat. 272 (2001). 2. U.S. Senate Roll Call Vote 107th Congress, 1st Session, S. 1510, 25 October 2001; U.S. House of Representatives Roll Call Vote 107th Congress, 1st Session, H.R. 3162, 24 October 2001. 3. ACLU v. Clapper, 785 F.3d 787 (2d Cir. 2015) (holding bulk telephone metadata collection exceeded Section 215 authority). 4. Privacy and Civil Liberties Oversight Board, Report on the Telephone Records Program Conducted under Section 215 of the USA PATRIOT Act and on the Operations of the Foreign Intelligence Surveillance Court (Washington, D.C.: PCLOB, 2014). 5. USA FREEDOM Act of 2015, Pub. L. No. 114-23, 129 Stat. 268 (2015). 6. U.S. Department of Justice, Office of the Inspector General, A Review of the FBI's Use of National Security Letters (Washington, D.C.: DOJ OIG, 2007). 7. Doe v. Gonzales, 449 F.3d 415 (2d Cir. 2006) (addressing First Amendment challenges to NSL gag provisions). 8. Glenn Greenwald, “NSA Collecting Phone Records of Millions of Verizon Customers Daily,” The Guardian, 6 June 2013.