Airport authorities in Phoenix, Las Vegas, Seattle, Portland, Oregon, Charlotte and Westchester county, New York, have refused to display the footage at security checkpoints, saying the overtly political messaging potentially violates state and federal law, including the Hatch Act, which bars federal employees from partisan political activity.
The real story is that the vast majority of airports aren’t pushing back.
It may be somewhat difficult to get a straight picture; this news source mentions nothing of Illinois but both major airports there, also, refused to play it: https://www.cbsnews.com/chicago/news/ohare-midway-airports-kristi-noem-video-government-shutdown/
Good on Illinois for doing that.