A federal government shutdown started at midnight after President Donald Trump and Congress couldn't come to an agreement on legislation to keep the government operating.

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

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