President Obama proposes allowing the Bush tax cuts to expire next year — as they are scheduled to do if nothing is changed — for those earning more than $250,000, but changing the law so as to extend the tax cuts for those earning less than that amount. Republican politicians are opposing the proposal. I don’t understand what they are thinking. Their position doesn’t make sense to me, regardless whether they are thinking about short-term stimulus, long-term fiscal conservatism, good economics, or even pure politics.