http://www.eia.doe.gov/basics/quickoil.html
We produce roughly 5 million barrels per day. We import 11 million per day.
Using your logic, and ignoring for a second the way the market actually works, we would have to more than triple our production. (from 5 to 16)
Here is our Hubbert curve, the aggregate of all of the individual state Hubbert curves.
The reserves just aren't there to do that, even if we opened up all the offshore deposits. What you propose to do is physically impossible. We have been using it faster than we have been discovering it, and your schtick would have us produce more oil now than we have EVER produced even at our peak when we could easily find onshore, cheap oil.
Assuming it was, and that we got it online, it would make little no impact at the pump, because of the way oil is traded as a commodity.
http://www.eia.doe.gov/aer/txt/ptb1105.html
The US produces only about 7% of the total global supply. Assuming the reserves are physically there, we would then get to 19% of the global total.