In part, you can thank the wacky enviros for high gas prices. They have campaigned vigorously so that no new refineries have been built in the US in the last 30 or 40 years, that I know of.
This is why we hear so much about refinery maintenance and breakdowns as a partial reason gas prices are so high. When the newest refineries are now 30 to 40 years old, this is what you get.