How Goldman secretly bet on the U.S. housing crash

``In 2006 and 2007, Goldman Sachs Group peddled more than $40 billion in securities backed by at least 200,000 risky home mortgages, but never told the buyers that it also was secretly betting that a sharp drop in U.S. housing prices would send the value of those securities plummeting. Now, a five- month McClatchy investigation has found that Goldman's failure to disclose those secret bets may have violated securities laws.''