The question of whether or not to drill offshore is something of a false construct anyway, because it is meaningless in the absence of other options. There are, of course, other options. We don't have to get our oil by drilling offshore. We can get it by tapping into our reserves or by buying it from somewhere else. If we decide to tap our reserves, we are doing little more than postponing the question about whether or not to drill offshore. Getting our oil from somewhere else, in addition to deeply complicating US foreign policy, is obviously not without an environmental impact. Carbon released by driving a car powered by oil from the Middle East, Central Asia or elsewhere, for example, still contributes to climate change.