 To finally end medical debt, we will need universal coverage without co-pays or deductibles. This can take many forms, none better than Medicare for All, which has been endorsed by the American Public Health Association, the American College of Physicians, and National Nurses United. Physicians, nurses, and other health care workers have a calling, one that my mentor, the late Dr. Paul Farmer, called Expert Mercy. It combines the best of scientific inquiry and the tradition common to many faiths of caring for the sick.