Travelers moving through O'Hare on Monday braced for long lines, travel headaches — and the added uncertainty of ICE officers stationed at airport security. Why it matters: A partial government shutdown is straining airport operations nationwide — and hitting one of the country's busiest airports at the start of spring break travel.

According to the FAA, a ground stop has been issued at O’Hare International Airport, with flights bound for Chicago being held at their departing airports. Flights are still active at Midway, according to the agency. The current ground stop at O’Hare will run through 4:45 p.m. according to officials, and ther is a chance it could be extended.

Immigration agents have been helping with security at O’Hare and other airports nationwide during the Department of Homeland Security budget impasse. President Trump signed an executive order Friday that will pay TSA workers.

At O’Hare, travelers have not seen significant delays, and security lines were not long and moving at a normal pace on Monday morning.

ICE agents were back at O'Hare Airport on Tuesday as thousands of TSA workers call out during pay freeze. Long TSA wait times persist despite ICE deployment as a potential deal to end the shutdown takes shape: Latest updates TSA staffing shortages are causing long wait times at airports across the country.

Federal immigration agents have been deployed at O'Hare Airport, prompting concern from Mayor Brandon Johnson.