"In this photo provided by NBC News, Dr. Alan Greenspan, former chairman of the Federal Reserve, speaks on NBC's ""Meet the Press""  in Washington, Sunday, Aug. 7, 2011. Greenspan said he expects the stock market slide to continue Monday in the wake of a decision by credit rating agency Standard & Poor's to downgrade the U.S. credit rating. He said it will take time for the markets to bottom out, but he said he sees no risk in investing in the United States and says that S&P's downgrade won't change that.  (AP Photo/NBC News, William B. Plowman) Photo: William B. Plowman"
{}