Pemex!
http://finance.yahoo.com/news/exclusive-pemex-refineries-boost-output-2014-maintenance-peaks-171720302--finance.html rocmoc n AZ/Mexico
Forum Discussion
I don't think it's that simple. The newest refinery in the US was built in the 1970's. Refineries in Pennsylvania shut down a while ago. Environmental laws, not corporate greed have made refineries very scarce.
