Origins: From Fragmentation to Federalization
Prior to September 11, 2001, airport security in the United States was not a federal responsibility. Airlines contracted private companies to handle passenger screening. In response, Congress passed the Aviation and Transportation Security Act in 2001, creating the TSA. The Screening Partnership Program (SPP) was created in 2004, giving airports the option to use private contractors operating under TSA supervision.
Two Models, One Mission
The vast majority of U.S. airports rely on federal TSA screeners — government employees hired, trained, and managed directly by the TSA. A small but important subset participates in the Screening Partnership Program, including San Francisco International Airport, the largest SPP airport in the country. In SPP airports, the TSA retains full control over security standards, procedures, and equipment.
Comparing Strengths and Weaknesses
The federal TSA model offers standardization and accountability. The absence of a profit motive means decisions are driven primarily by security considerations. The SPP model allows private contractors to hire and manage staff more flexibly. SPP airports often report better employee retention and faster adaptation to changing operational needs.
The 2026 Federal Funding Impasse
The differences became especially apparent during the 2026 federal funding impasse. As funding for the Department of Homeland Security lapsed, federal screeners were required to continue working without pay, leading to staffing shortages. Airports in the Screening Partnership Program experienced far less disruption — private contractors continued to receive compensation through pre-existing contracts.
Lessons Learned and the Path Forward
The events of 2026 revealed that funding mechanisms can be as important as operational design. The most pragmatic approach is to maintain and expand the hybrid model, increasing SPP participation among mid-sized and high-traffic facilities. The future of airport security should be a carefully managed integration of both systems — leveraging the strengths of each to build a more resilient whole.