
The chairman of the US Federal Reserve, Ben Bernanke, has warned that the country's creditworthiness is at risk if its borrowing limit is not raised.
He said the US could lose its coveted AAA credit rating if Congress did not vote in favour of lifting the $14.3 trillion (£8.7 trillion) debt ceiling.
If there is no deal by August, the US may start defaulting on obligations.
Vice-President Joe Biden and congressional leaders have resumed efforts to find a bipartisan solution.
They are trying to reach an agreement that would tie spending cuts with an increase in the debt limit. They are expected to discuss annual spending levels, budget process reforms, taxes and healthcare






