US Shutdown
US President Barack Obama has warned that Wall Street should be concerned that a conservative faction of Republicans is willing to allow the country to default on its debt.
The US government has partially closed after Congress failed to agree a budget and will run out of cash on 17 October unless its debt ceiling is raised.
In a TV interview on Wednesday, Mr Obama said he was "exasperated".
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The shutdown has left more than 700,000 employees on unpaid leave and closed national parks, tourist sites, government websites, office buildings, and more.
However, as one budget crisis raged in Washington DC, another one - potentially more dangerous - loomed in the coming weeks.
On 17 October, the US government will run out of cash to pay its bills unless the debt ceiling is raised.
On both issues, the Republicans who control the House of Representatives have demanded concessions from Mr Obama and his fellow Democrats in return for funding the government's continued operation and for raising the debt ceiling.
Chiefly, the Republicans demand the repeal, delay or defunding of a healthcare reform law - dubbed Obamacare - passed by the Democrats in 2010.
Major portions of that law, which was subsequently validated by the US Supreme Court and was a major issue in the 2012 presidential election, took effect on Tuesday