WASHINGTONIt is already too late for the United States to lead the world in the fight against global warming. President Bush saw to that last year, when he abandoned his promise to make power plants reduce the amount of carbon dioxide they send into the air. But if the president won't lead the world, then the business community, the American people and their elected representatives in Congress must lead the president.This month President Bush gave up all pretense of moving forward in the effort to clean up the oldest and dirtiest power plants. First he denigrated the climate action report...