This WSJ editorial says the recent agreement at the Caterpillar Joliet plant in llinois is not about leverage but about increasing U.S. manufacturing competitiveness. As U.S. competitivness improves and the economy grows wages will increase. It does little service to management, labor and the U.S. economy for above market wage rates to lead to loss of manufacturing competitiveness as happened in the U.S. automobile industry, resulting in closing of plants.