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Political rivals in the US Senate joined forces in the early hours of this morning to agree a deal that should protect the US economy from a sudden shock.
Huge tax rises and spending cuts due to take effect at midnight last night should now be averted, but only if the deal passes one final vote in the House of Representatives.
ITV News' correspondent Lewis Vaughan Jones reports from Washington.
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The US Vice President Joe Biden will meet with fellow Democrats in the House of Representatives today to discuss the "fiscal cliff" deal that he forged with Senate Republican Leader Mitch McConnell, a Democratic aide said.
Biden needed to help sell Senate Democrats on the deal before they joined Republicans at about 2am local time (7am GMT) in approving the measure.
Republican members of the US House of Representatives will meet at 1pm local time (1800 GMT) to discuss "a path forward" in the debate over the "fiscal cliff," a senior aide said.
Earlier today, the Senate voted in favour of a bipartisan bill to avert steep tax rises and spending cuts.
The meeting could help Republicans leaders decide when to begin consideration of the White House-backed measure, and a vote could come as soon as later in the day.
US politicians have stepped back from the fiscal cliff which many feared could prompt a new economic downturn.
Early on New Year's Day, the Democrat-dominated Senate passed legislation to block huge tax increases and spending cuts by an overwhelming 89-8.
A vote in the Republican-led House of Representatives is expected later.
Speaking after the vote US Majority Leader Harry Reid thanked members for their patience.
US President Barack Obama has called for the House of Representatives to follow the Senate's lead and pass a 'fiscal cliff' deal to extend tax cuts for middle-class Americans and raise tax rates on top earners.
"While neither Democrats nor Republicans got everything they wanted, this agreement is the right thing to do for our country and the House should pass it without delay," Obama said in a statement after the Senate voted overwhelmingly to approve the legislation.
"There's more work to do to reduce our deficits, and I'm willing to do it. But tonight's agreement ensures that, going forward, we will continue to reduce the deficit through a combination of new spending cuts and new revenues from the wealthiest Americans," Obama said.
President Barack Obama has praised the US Senate after it passed a bill to avert the 'fiscal cliff', by delaying spending cuts for two months.
He also called on the House of Representatives to pass the deal without delay.
The US Senate has passed a bill to avert 'fiscal cliff' tax hikes and spending cuts, according to the Associated Press.
US Senators have just started to vote on the last-minute deal agreed last night between Republicans and the White House to avert the 'fiscal cliff', according to CBS News.
US Vice President Joe Biden said he feels "very good" about how the vote on the fiscal cliff would turn out.
After months of negotiation and argument, the White House and Senate reached an agreement that would delay spending cuts by two months, according to administration sources.
The White House and congressional lawmakers have reached a deal to avoid the "fiscal cliff" that would delay harsh spending cuts by two months, an Obama administration source told Reuters.
The source said Democratic Senate Majority Leader Harry Reid and House of Representatives Minority Leader Nancy Pelosi had signed off on the deal.
The agreement includes a balance of spending cuts and revenue increases, the source said.
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America's financial crisis has been averted, not solved. We've had the fiscal cliff. Now get ready for the debt abyss.
Democrats and Republicans have so far failed to agree on an alternative plan to the tax increases and spending cuts scheduled for January 1.