As ICE officers were deployed to airports, some have raised concerns about their qualifications.

An internal watchdog report in the Department of Homeland Security identified serious vulnerabilities in TSA's screenings at airports nationwide.

For years members of Congress and their staff had special privileges at airports, allowing them to quickly skip TSA screening lines.

The disruptions, which have left some travelers waiting hours in line, have reignited interest in expedited screening programs like TSA PreCheck and CLEAR, with Google search interest spiking in recent days.

Federal immigration agents were filmed arresting a woman at San Francisco International Airport on Sunday night.

"TSA PreCheck will likely help you, even now with the long lines we're seeing at checkpoints," said one travel expert.

New TSA screening changes at IAH led to hourlong waits as staffing shortages tied to the shutdown reduced checkpoint capacity.