The 2010 landslide means that Republicans in the House can stop any new legislative initiatives by the Democrats and that Senate Republicans, if united, can stop almost anything Democrats want to do in that body as well. House Republicans can also send to the Senate bills that will put political pressure on Obama and Senate Democrats, like a complete extension of the Bush tax cuts. But at the federal level, Republicans cannot actually do anything without Democrats caving in. The situation is very different at the state level. Republicans now control both houses of the state legislature and the governorship...