There is no sufficient amount of hoops that an oil company could jump through to build a new refinery. Our lawsuit-based NIMBY society has made it literally impossible. The last new refinery was built 20 years ago. I believe our population and thirst for gasoline has increased a bit since then.

Whatever you think of Bush, I think he had a good idea in converting abandoned military bases into refinerys.

I believe the lack of diesel refining capacity in the US is the reason for the inappropriate high prices compared to gas. I think more diesel refining is coming back on line soon to bring the price more in line.