US Capitol Building in Washington DC
WASHINGTON (NBC News) It's official: As of this morning, the federal government has shut down for the first time in 17 years.
Lawmakers in Washington worked late into the night with no resolution on a budget to keep the government running.
Starting this morning: clinical trials are on hold, social security payments could be delayed, food inspections will be scaled back, and many head start preschools are shut down.
House Speaker John Boehner named eight people to negotiate a plan to re-open the government.
President Obama had a midnight message for U.S. troops, saying they will get paid.
Democrats and Republicans are at odds over whether to put the brakes on the Affordable Care Act.