Brerabit is right, but, forgets to tell the rest of the story.
The ethanol issue has increased prices about 15-20 cents. However, this is not a new issue for big oil. Big oil knew about the proposed shift for a number of years, However, big oil decided to ignore the looming problem in hopes trhat cancer causing environment polluting mtbe's would be exempted from lawsuits. Despite being assured that this would not happen, big oil did nothing to address the issue of ethanol shortages. As a result, big oil is now behind the 8 ball, which suits them well, as they can easily pass on the price, plus some, and blame it on the government. The ethanol surcharge, due to supply is squarly in oil's failure to anticipate their inability to get immunity from liability for the cancer they caused because of mtbe.
The real problem is that while world demand has increased, supply has decreased. Decreased in the gulf, decreased in the middle east (although saudis have increased), decreased in south america, decreased in africa.
And, George has pissed just about all of the oil producing countries off. The missle east, pissed off. The south americans, pissed off. Russia, at odds with us again. All of this has an effect of the speculative prices on the exchange, which increases them.
China, a country who would like nothing better than to rukle the world, is our best friend????? but, controls its prices, wages, currency, to a level that is low, and with the influx of US dollars as a result, has unlimited $$ to get as much oil as they want. In a sense, we are feeding the beast in order for the beast to increase the prices of the oil.
Of course, the fear of war, etc. and the unrest in the middle east adds a 15% or more terrorist element to the prices.
Of course, the low value of the dollar does nothing to help.
The US govt. could take steps to combat the prices. We have done this before. Have we done it today, no. Why,. maybe because the exact people who are getting richer than rich on this oil crisis are those same friends who helped George make money in every loosing busines he was ever involved in. What comes around goes around.