US stocks have had their worst week of 2011 amid fears that the debt-ceiling impasse in Washington would provoke a ruinous default or a downgrade of the United States' credit rating.
							01/08/2011 - 06:44
						
					US stocks suffer worst week of year
								01/08/2011 - 06:44
							
						
 
             
										 
             
             
            