Warren Buffett's Message to Washington: Bipartisanship Works

“Our country’s almost unbelievable prosperity has been gained in a bipartisan manner,” he wrote in his annual letter to shareholders as he traced the growth of U.S. economy over the last 230 years.The billionaire investor’s annual letter, which ran 13 pages this year and quoted Abraham Lincoln and Christopher Wren, typically goes beyond Berkshire Hathaway Inc.’s results to discuss investing principles and his and business partner Charlie Munger’s thoughts on a