WASHINGTON - NOVEMBER 14: Berkshire Hathaway Chairman and CEO Warren Buffett shields his eyes from the glare of television lights as he testifies during a hearing before the Senate Finance Committee November 14, 2007 on Capitol Hill in Washington, DC. The hearing was to examine the uncertainty in federal estate tax planning under current law which will change every year from 2008 through 2011. (Photo by Alex Wong/Getty Images) Getty Images