Warren Buffett goes bargain hunting - in the United States

Less than a year ago, billionaire Warren Buffett seemed enthralled by all things European. He went on a whirlwind tour looking for deals on the continent even though the euro was trading at a huge premium against the dollar. Now as the worldwide economy continues to weaken, the greatest investor in history has turned his attention back to the United States.

Buffett raised eyebrows a few months ago when he said he was buying American stocks for his personal account and that ''if prices keep looking attractive, my non-Berkshire net worth will soon be 100 percent in United States equities." Now, he is taking his "buy American" push a step further by adding more U.S. companies.