Riggs: People who blame presidents for the cost of oil are intellectually lazy, or perhaps just disingenuous partisans. Americans simply think that a freely traded resource should be the cheapest right here right now. Free traders should know that if China pays the Saudis more than we do, the price is going up. China and India have money too. (AP file photo of President Obama)

Question: Have you changed your driving habits as a result of higher gas prices?