Why can't we have offshore drilling and a few more refineries?

I know some people out there are always going to use Bush and company as convenient scape goats, but if you look at it from an objective standpoint, we are in dire need of more refining capacity, and if it is done in a reasonable manner, there is absolutely no reason to have more drilling. Since there hasn't been a new refinery opened here in the USA since the middle 1970s' we could use much more refining capacity because there are a few more cars on the road since then, and we do know there is a lot of oil to be had. If this could be done it would tide us over until atlernative sources can become much more practical. It is either this, or we will be spending much more than we really need to.