Patrick Casey, center, works with fellow traders on the floor of the New York Stock Exchange Tuesday, March 12, 2013. Stocks are edging lower on Wall Street in early trading following

 

              Patrick Casey, center, works with fellow traders on the floor of the New York Stock Exchange Tuesday, March 12, 2013.  Stocks are edging lower on Wall Street in early trading following
Patrick Casey, center, works with fellow traders on the floor of the New York Stock Exchange Tuesday, March 12, 2013. Stocks are edging lower on Wall Street in early trading following a seven-day rally. (AP Photo/Richard Drew)