President Donald Trump and Democratic leaders remained at odds on Sept. 30, just hours before a possible federal government shutdown that would start Wednesday, Oct. 1.

As the impending deadline nears, both sides continued to clash over a potential halt to all but essential services due to the political impasse.

If congressional leaders cannot strike a deal on funding legislation by midnight on Tuesday, Sept. 30, a partial government shutdown would begin on Oct. 1.

About 800,000 federal employees went without pay for 35 days during the longest-ever U.S. government shutdown in 2018 and 2019, USA TODAY previously reported.

Here is what’s open and closed in a government shutdown.

What happens during a government shutdown?

During a government shutdown, all federal agencies and services deemed non-essential must stop working, affecting thousands of federal employees and, in turn, millions of Americans.

Essential services, like military and law enforcement, remain working.

What's open during a government shutdown?

Here are some services that remain open during a government shutdown. But keep in mind that some services may face disruption or delays. For example, during the 2018-2019 shutdown, air traffic controllers worked without pay, causing widespread delays.

  • U.S. Postal Service
  • Medicare
  • Social Security payments continue, but some SSA services could be impacted
  • Air-traffic control
  • Banks
  • Courts (local, state and federal)
  • Border security
  • Disaster aid
  • Federal law enforcement agencies, including the FBI, DEA and prison staff will remain operational. The Secret Service and Coast Guard will continue their duties.
  • The military: All active-duty personnel stay on the job, but nearly half of the Department of War's 741,477 civilian employees could face furloughs.

What's closed during a government shutdown?

Here's are some places and services that could close during a government shutdown:

  • National parks have often closed during shutdowns, but the NPS had not officially released a shutdown contingency plan by Tuesday afternoon, Sept. 30.
  • Visitor centers and tours of federal government buildings including the U.S. Capitol, White House, and FBI Building.
  • Smithsonian museums could close in the event of an extended shutdown.

Natalie Neysa Alund is a senior reporter for USA TODAY. Reach her at nalund@usatoday.com and follow her on X @nataliealund.

This article originally appeared on USA TODAY: Banks, courts, parks. What’s open and closed in a government shutdown?

Reporting by Natalie Neysa Alund and Saman Shafiq, USA TODAY / USA TODAY

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