The U.S. health care system may be the most expensive in the world, but that doesn’t mean it outperforms other industrialized countries. Far from it. Using the Commonwealth Fund’s new interactive tool, now you can see what would happen if the U.S. were to raise its health system performance to the levels achieved elsewhere in the world. Users can select from 11 health systems compared in our report Mirror, Mirror on the Wall, 2014 Update: How the U.S. Health Care System Compares Internationally and click through a range of performance measures to see the potential for U.S. improvement.