I'd vote 'yes' on Keystone pipeline: Warren Buffett By: CNBC.com News March 03, 2014 at 08:50 AM EST Warren Buffett tells CNBC he backs the Keystone Pipeline even though it would take away some business from his Berkshire Hathaway rail subsidiary BNSF. Read More >> Related Stocks: Berkshire Hathaway Berkshire Hathaway iPath Dow Jones-Goldman Sachs Crude Oil Fund