The government of Mexico City, Mexico believes that access to health care is a human right, and should be universal and free to those who cannot afford to pay. In Mexico City the mayor has made health care accessible to all, and has garnered the broad support of the City’s leaders and citizens for this unique effort 9. When the City’s popular mayor, Andres Manuel López Obrador, came to power, he faced two significant challenges to keeping his campaign promise of free health care to poorer families. First, the public health system was fragmented. It covered only 60% of the population and was adminis- tered by the central government. Second, widespread political corruption had undermined public.