Someone uncovered a pipeline from Canada that feed Chicago and I think their is a small refinery in southern IL. and it essentially allows that region to have somewhat cheaper fuel. I am not sure if Buffet has his hands in this.
Does anyone remember this, or am I way off here?
A U.S. government agency is investigating an oil leak of about 1,200 barrels (190,000 litres) that seeped out of an Enbridge pipeline in Wisconsin, which was delivering Canadian crude to Chicago-area refineries.
http://www.cbc.ca/news/canada/u-s-agency-investigating-enbridge-oil-spill-1.1135835