As politicians in Washington spar over details of how to fund the government, the clock is also ticking for people across the U.S. who would be affected by a shutdown.

Without congressional action, government funding will expire at 12:01 a.m. on Oct. 1. Anything deemed nonessential would be put on hold, so Americans could experience delays with certain services and hundreds of thousands of federal workers will go without pay.

Here are some of the ways a shutdown would be felt across the country.

Air traffic controllers and most Transportation Security Administration employees are considered “essential workers” and have to stay on the job, even if that means working without pay while the rest of the federal government shuts down.

If a shutdown dragged on, travelers could see more “sick-

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