 ABC News | Greenspan "shocked" at credit system breakdown Reuters - By Mark Felsenthal WASHINGTON (Reuters) - Former Federal Reserve Chairman Alan Greenspan told Congress on Thursday he is "shocked" at the breakdown in US credit markets and said he was "partially" wrong to resist regulation of some securities. Video: Greenspan Denies Blame for Crisis, Admits 'flaw' Greenspan: Bad data hurt Wall Street computer models |