Energy Policy: Congress let the corn-based fuel's tax credits expire when it adjourned, but continuing mandates for its use means pump prices will go even higher and the money saved will be spent elsewhere.Subsidies for ethanol expired over the weekend, ironically just days before the Iowa caucuses.In their 33 years of existence, ethanol subsidies, the original poster child for crony capitalism, with an estimated cost of at least $45 billion and an annual price tag in recent years of $6 billion, have been a political sacred cow, letting farm state politicians bring home the bacon in exchange for generous campaign contributions.