At least my fuel is refined locally

Always in search of a smaller carbon footprint, I've give up on ethanol (can't find any) and focused on getting uinleaded gas that's cheap and is refined locally at the Frontier Refinery. So I've begun filling up the 2000 Dodge Yuppievan at King Soopers. Frontier, only two miles away, provides the fuel, so there's no major transportation cost. Not sure if the crude comes from Wyoming or Saudi Arabia, but hope it was drilled in the U.S. If not, I may have another problem as I seek consciousness-raising through fuel economy and look for fuel from non-Middle East suppliers. I know that oil is one of the reasons we're in Iraq. I don't want to be a part of that supply chain.