Berkshire Hathaway Chairman Warren Buffett wanders at the company trade show before his company's annual meeting in Omaha, Nebraska in this April 30, 2011 file photo. Increasing taxes on the wealthy would bring fairness to U.S. taxpayers across the board, billionaire investor Buffett said on January 25, 2012, backing the tax reform that President Barack Obama proposed in his State of the 

Berkshire Hathaway Chairman Warren Buffett wanders at the company trade show before his company's annual meeting in Omaha, Nebraska in this April 30, 2011 file photo. Increasing taxes on the wealthy would bring fairness to U.S. taxpayers across the board, billionaire investor Buffett said on January 25, 2012, backing the tax reform that President Barack Obama proposed in his State of the