Transportation Security Administration

Audio readout of this profile.

Overview

The Transportation Security Administration is the US federal agency responsible for the security of the nation's transportation systems. Its principal operational footprint is at approximately 430 federalised commercial airports, where Transportation Security Officers (TSOs) screen passengers and checked baggage; secondary functions include surface-transportation security, the Federal Air Marshal Service, the Secure Flight passenger-watchlist programme, and the issuance of Transportation Worker Identification Credentials.¹

The Administration is a component of the Department of Homeland Security and is led by an Administrator nominated by the President and confirmed by the Senate, with a five-year term established by the FAA Reauthorization Act of 2018. TSA employs approximately 60,000 staff, of whom roughly 50,000 are TSOs, making it one of the largest components of DHS by personnel.²

History & Origins

The Transportation Security Administration was established by the Aviation and Transportation Security Act, signed into law on 19 November 2001, in direct response to the 11 September 2001 terrorist attacks. The Act federalised commercial airport passenger and baggage screening, which had previously been conducted by private contractors hired by individual airports or air carriers under Federal Aviation Administration regulation.³

TSA was originally placed within the Department of Transportation. It was transferred to the Department of Homeland Security on 1 March 2003, with the standing-up of DHS, and has remained a DHS component since. The first decade of the Administration's operation was dominated by the build-out of the federalised screening workforce — tens of thousands of TSOs hired in TSA's first years — and successive responses to attempted attacks, including the December 2001 "shoe bomber" Richard Reid (producing the requirement that passengers remove shoes), the August 2006 transatlantic liquid plot disrupted by UK authorities (producing the 3-1-1 liquid restriction), and the December 2009 "underwear bomber" Umar Farouk Abdulmutallab (accelerating deployment of full-body imaging technology).⁴

The post-2010 period has been characterised by the introduction of risk-based screening through the TSA PreCheck programme (2011), successive Inspector General audits identifying screening failures, and recurring debate over the Behavior Detection Officer programme.⁵

Mandate & Jurisdiction

TSA's authorities derive from the Aviation and Transportation Security Act, 49 U.S.C. § 114, and successive transportation-security legislation. Its core functions are:

• screening of all passengers and property carried in passenger commercial aircraft operating in the United States;
• security of US airports and the broader transportation system, including surface transportation;
• operation of the Federal Air Marshal Service;
• maintenance of the Secure Flight programme matching passenger reservations against terrorist watchlists;
• issuance of Transportation Worker Identification Credentials and Hazardous Materials Endorsements;
• promulgation of security regulations applicable to transportation operators.⁶

TSA does not have general law-enforcement authority; arrests at security checkpoints are made by accompanying state or local police. The Federal Air Marshal Service has separate law-enforcement authority for in-flight security.

Notable Operations

Confirmed Federalisation of airport screening (2001–2002). TSA's stand-up and the federalisation of passenger and baggage screening at US commercial airports was the largest federal hiring effort since the Second World War. TSA was required to take over screening at all federalised airports by 19 November 2002 and to take over checked-baggage screening by 31 December 2002 — both deadlines specified in the Aviation and Transportation Security Act.⁷

Confirmed Advanced Imaging Technology (2010–onward). TSA accelerated deployment of full-body Advanced Imaging Technology scanners after the December 2009 attempted bombing of Northwest Airlines Flight 253. The first-generation backscatter scanners produced detailed images of passengers' bodies and were the subject of substantial privacy-related public protest. After a 2011 court ruling in EPIC v. DHS requiring TSA to conduct a public notice-and-comment rulemaking, and after the FAA Modernization and Reform Act of 2012, the backscatter machines were replaced by millimetre-wave scanners using generic figure displays.⁸

Confirmed TSA PreCheck and risk-based screening (2011–onward). The TSA PreCheck programme, launched at four airports in October 2011 and expanded nationwide thereafter, allows pre-screened low-risk travellers expedited screening. PreCheck is now available at 200+ US airports; enrollment reached approximately 20 million as of August 2024.⁹

Confirmed Secure Flight (2009–onward). TSA's Secure Flight programme matches passenger reservations against the No-Fly List and Selectee List components of the federal Terrorist Screening Database. The programme has been the subject of multiple federal-court challenges concerning the redress process and the use of secret evidence.¹⁰

Controversies & Abuses

Confirmed 2015 Inspector General covert-testing failure rate. A 2015 leaked summary of a DHS Inspector General classified report indicated that undercover testers had successfully smuggled prohibited items — including weapons and simulated explosives — through TSA checkpoints in 67 of 70 attempted tests, a 95% failure rate. Acting Administrator Melvin Carraway was reassigned to the DHS Office for State and Local Law Enforcement, effective 1 June 2015. Subsequent IG covert testing in 2017 and 2019 produced improved but still substantial failure rates; the specific findings remain partially classified.¹¹

Confirmed Behavior Detection Officer / SPOT programme. TSA's Screening of Passengers by Observation Techniques (SPOT) programme, deployed nationwide between 2007 and 2017, used Behavior Detection Officers to identify passengers exhibiting indicators of malicious intent. The Government Accountability Office's 2013 report concluded that the scientific basis for behavioural detection was "questionable" and that the programme's rate of identification of actual threats did not exceed chance. TSA scaled back the programme; an ACLU lawsuit and disclosed internal documents identified specific concerns about racial and religious profiling in BDO referrals.¹²

Confirmed Theft and misconduct by TSOs. Successive DHS IG and federal-court records have documented hundreds of cases of TSO theft from passenger property. The Administration has dismissed thousands of officers for theft and other misconduct over the agency's first two decades; specific high-value cases at Newark, Miami, and JFK airports have been the subject of federal prosecutions.¹³

Confirmed Pat-down practices and complaints. TSA's enhanced pat-down procedures, introduced in 2010 alongside the Advanced Imaging Technology rollout, produced sustained public criticism. The DHS Office for Civil Rights and Civil Liberties and the TSA Office of Civil Rights and Liberties, Ombudsman, and Traveler Engagement have processed thousands of complaints; the GAO has produced multiple reports on the consistency of pat-down practice.¹⁴

Alleged Profiling and disparate-impact concerns. Successive academic studies, ACLU litigation, and complaints to the DHS Office for Civil Rights and Civil Liberties have alleged disproportionate secondary-screening impact on Muslim, Sikh, and other religious-minority travellers. The full administrative-record contour of complaints is partially in the public domain through FOIA-released summary statistics.¹⁵

Notable Figures

• John Magaw — First Administrator (Acting and confirmed), 2002. Stand-up period.
• James Loy — Administrator, 2002–2003. Subsequently Deputy Secretary of Homeland Security.
• Edmund "Kip" Hawley — Administrator, 2005–2009. Notably critical in retirement of TSA's institutional approach to risk.
• John Pistole — Administrator, 2010–2014. Period of AIT deployment and PreCheck launch.
• Peter Neffenger — Administrator, 2015–2017. Period of the IG covert-testing report fallout.
• David Pekoske — Administrator, 2017–2025. First Administrator confirmed for a full statutory five-year term.

Oversight & Accountability

TSA is subject to oversight by the House Homeland Security Committee, the Senate Homeland Security and Governmental Affairs Committee, the House Transportation and Infrastructure Committee, the Senate Commerce Committee, the House and Senate Appropriations Committees, the DHS Inspector General, the Government Accountability Office, the DHS Office for Civil Rights and Civil Liberties, and the TSA Office of Civil Rights and Liberties, Ombudsman, and Traveler Engagement.

The GAO has maintained sustained focus on TSA across its existence: the Administration has been a recurring presence on the GAO High-Risk List for various functional areas, including in successive biennial High-Risk updates.¹⁶

Sources & Further Reading

1. Aviation and Transportation Security Act, Pub. L. 107-71, 19 November 2001; 49 U.S.C. § 114; TSA, "About," tsa.gov.
2. FAA Reauthorization Act of 2018, Pub. L. 115-254; TSA, Annual Report, successive editions.
3. Aviation and Transportation Security Act; David Schanzer and Joe Eyerman, "Federalization of Aviation Security: A Failed Experiment?," Homeland Security Affairs, 2009.
4. 9/11 Commission Report (Government Printing Office, 2004); successive TSA Administrator testimony to House Homeland Security Committee, 2002–2010.
5. Government Accountability Office, "TSA Should Limit Future Funding for Behavior Detection Activities," GAO-14-159, November 2013.
6. 49 U.S.C. § 114; 49 C.F.R. parts 1500–1599.
7. Aviation and Transportation Security Act, sections 110(d), 110(c)(2).
8. EPIC v. Department of Homeland Security, 653 F.3d 1 (D.C. Cir. 2011); FAA Modernization and Reform Act of 2012, Pub. L. 112-95.
9. TSA, "PreCheck Program," tsa.gov/precheck; TSA Administrator testimony, House Homeland Security Subcommittee on Transportation Security, 2014–2024.
10. Latif v. Holder, 28 F. Supp. 3d 1134 (D. Or. 2014); subsequent DHS Traveler Redress Inquiry Program (DHS TRIP) reforms.
11. "Exclusive: TSA failed to detect weapons, explosives in 95% of tests," ABC News, 1 June 2015; DHS Office of the Inspector General, classified covert-testing reports of TSA passenger screening, 2015 and successive editions.
12. GAO, "TSA Should Limit Future Funding for Behavior Detection Activities," GAO-14-159, November 2013; American Civil Liberties Union, Bad Trip: Debunking the TSA's "Behavior Detection" Program, 2017.
13. DHS Office of the Inspector General, recurring TSA misconduct reports; Department of Justice prosecutions of TSO personnel, multiple federal districts.
14. DHS Office for Civil Rights and Civil Liberties, Annual Reports; GAO, "TSA Should Reassess the Personal Search Program," GAO-12-398, 2012.
15. ACLU, Bad Trip, op. cit.; DHS CRCL, complaint summary statistics, FOIA-released annual editions.
16. GAO, High-Risk Series updates, biennial editions, 2003–present.