Actually, in the past 10 years America's oil production has ramped up substantially. If it came down to it we could be self-sufficient pretty quickly. The main barriers to that right now are regulatory (our current administration being of the opinion that fossil fuels are bad for the Earth). But the oil's there, we can drill it if we feel like it, but stored oil capacity is at an all time high... the biggest short-term question would be refinery capacity, whether it's prepared to deal with shale oil instead of imports. Oh, and also available: Canadian tar sands.
All the recent geopolitical analysis I've seen has suggested that the United States doesn't care about oil over there and is quite willing to let the Middle East go to pot: ISIS and Iranian nukes and what-have-you.