Is U.S. health care the best or 'least effective' system in the modern world?

The presidential election may determine the course of U.S. health care. America's health system is the most expensive in the world, brimming with innovation but also leaving more than 30 million people uninsured. How does it compare to services in other modern industrialized nations? William Brangham reports from Houston for the first in a new series, “The Best Health Care? America & the World.”

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