The partial government shutdown has caused significant delays at U.S. airport security checkpoints due to TSA employees missing paychecks, leading to increased resignations and callouts that strain staffing levels nationwide. Key airports like Atlanta, Austin, and Houston are experiencing severe wait times, with TSA officials warning that the situation will worsen unless funding is restored. The shutdown, rooted in a political deadlock over immigration policy, has left many TSA workers struggling financially, prompting calls from airlines and officials for Congress to resolve the impasse to stabilize airport operations.