The US government partial shutdown is ending after Republicans and Democrats voted for a temporary funding bill, reports BBC.
The Democratic leadership agreed to back the bill after accepting promises from Republicans for a debate later on the future of young illegal immigrants.
President Donald Trump, who signed the bill on Monday evening, took a swipe at Democrats.
It is the fourth temporary measure since October because Capitol Hill cannot agree a longer-term budget.
The spending bill passed the Senate by 81-18 and the House of Representatives by 266-150 earlier on Monday.
The so-called continuing resolution keeps the government funded until 8 February in the hope that Congress can reach a longer-term budget agreement in the meantime.
Thousands of federal employees who had been placed on temporary, unpaid leave since Saturday breathed a sigh of relief.
"It was essentially a lunch break," Tom Chapel, a scientist at the Centers for Disease Control and Prevention in Atlanta, Georgia, told Reuters news agency.