I believe many of our political leaders have a comic book view of how gasoline prices are set. They envision oil companies adding up all of their input costs, and then tacking on a profit margin. Oddly, sometimes the oil companies are really generous and sell gasoline for under $2.00 a gallon. Other times, the belief must be that they are super greedy and sell it for $6.00 a gallon. Adding to all of the input costs and profit margins are the taxes. State and federal governments get a cut of each gallon of gasoline sold. Since 1993, the federal portion of the gasoline tax has been 18 cents a gallon. Add on the costs, profit margin, and taxes, and you end up with the price of gasoline. Or, so the belief goes.