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WASHINGTON - MARCH 13: Warren Buffett, chairman and CEO of Berkshire Hathaway Inc., participates in a panel discussion, "Framing the Issues: Markets Perspectives," at Georgetown University March 13, 2007 in Washington, DC. Treasury Secretary Henry Paulson hosted the "Treasury Conference on U.S. Capital Markets Competativeness," a day-long program to focus on capital market issues like regulation, competition and other related topics. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON - MARCH 13:  Warren Buffett, chairman and CEO of Berkshire Hathaway Inc., participates in a panel discussion, "Framing the Issues: Markets Perspectives," at Georgetown University March 13, 2007 in Washington, DC. Treasury Secretary Henry Paulson hosted the "Treasury Conference on U.S. Capital Markets Competativeness," a day-long program to focus on capital market issues like regulation, competition and other related topics.  (Photo by Chip Somodevilla/Getty Images)