If we want oil we have to drill for it. Here or elsewhere. Me, I prefer we use our own.
Actually oil can come from any vareity of sources - mostly plants. We could also grow it in infinitely renewable supplies. ANWR should only be part of a drive to achieve energy independence through renewables. Otherwise we are just wasting a precious reserve that we might need as global supplies dwindle in the not too distant future.
Energy secrutiy is directly related to national security and should not be in the hands of oil companies, nor the context of a partisan squabble.