Dow Plunges More Than 500 Points At Close... Worst Drop Since 9/11... Obama: 'I Fault The [McCain/Bush] Economic Philosophy'... McCain: "Fundamentals Of Our Economy Are Strong"... Bush: We "Can Deal With These Adjustments"... Majority Leader Reid: 'What We Are Seeing Is The Legacy Of The Bush-McCain Economic Policies'... Speaker Pelosi: "Eight Years Of Weakened Regulation By The Bush Administration And Republicans Have Led Us To This Point"... Senator Biden: "McCain Stands With George Bush Firmly In The Corner Of The Wealthy And Well-Connected"... Secretary Paulson Deflects Blame: "I'm Playing The Hand That Was Dealt Me"...