Funding to keep the federal government up and running will run out at midnight Friday unless Congress passes a new spending bill and President Trump signs it into law.
If they fail, the result would be a partial government shutdown in which most services would stop except those deemed "essential" — such as national security work performed by the Department of Homeland Security and the FBI. Active duty military personnel would not be furloughed, but roughly 40% of non-defense employees would be.
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Every shutdown is different because federal agencies have quite a bit of leeway in deciding how to carry it out. But, based on previous shutdowns, here's what you can expect: