he Dow fell more than 600 points Monday, and had one of its largest plunges immediately following President Obama’s speech in the afternoon regarding the downgrade on U.S. debt. In his first public statement following the S&P downgrade, President Obama attempted to encourage Americans that markets still regard the U.S. government debt as being the highest possible grade. President Obama said, "Markets will rise and fall. But this is the United States of America. No matter what some agency may say, we've always been and always will be a triple-A country." Obama said he hoped the downgrade would give U.S....