If we drilled for more oil, the private owners of that oil wouldn't sell it to Americans at discounted prices. They'd export it and get the market rate. Adding 2% to the supply is not going to bring the market crashing down.
The feds have been charging 18c a gallon for 20 years. That isn't what spiked the price.
And the gas tax is the epitome of conservative taxation. People that use more pay more and the funds go to pay for highways and bridges.
Also, the gas tax is certainly not Obama's fault.