Financial regulators in the United States have accused the investment bank Goldman Sachs of fraud related to the collapse of the American housing market in 2007. The Securities and Exchange Commission is taking civil action against the bank. Michelle Fleury sent this report from the floor of the New York Stock Exchange. The Securities and Exchange Commission alleges the bank sold investors a financial product based on subprime mortgages that was designed to lose value. Goldman Sachs has denied the allegations and says it will defend the firm and its reputation. This is the first time that the US government has explicitly accused one of Wall Street's premier institutions of fraud relating to the collapse of the US housing market.