United States===Transportation Security Administration

The United States===Transportation Security Administration is at the forefront of the shutdown's impact, with its screeners missing paychecks and taking unscheduled time off, causing severe delays and operational challenges at airports across the United States. This directly affects air travel and passenger experience.

The United States===Transportation Security Administration (TSA) is the primary target of Donald Trump's budget proposal, facing a $52 million cut and a mandate for privatization of security operations at small airports. The agency has experienced significant disruptions due to budget disputes, leading to unpaid officers and high attrition rates, and has been criticized for failing audits and intrusive screening measures.

The United States===Transportation Security Administration, a part of the United States===United States Department of Homeland Security, is affected by the shutdown. Its officers are working without pay, which could lead to long security lines and disruptions in air travel.

The United States===Transportation Security Administration's essential employees will work without pay, potentially leading to staffing shortages, increased sick calls, and longer wait times at airports, impacting travel.

The United States===Transportation Security Administration was initially directed to suspend its PreCheck program, leading to concerns about travel disruptions. However, it later clarified that PreCheck would remain operational, albeit with potential staffing adjustments. This demonstrates the agency's efforts to maintain essential services despite the shutdown.