Colonoscopy copay? Zero. iStockphoto.com hide caption

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Luz Sepada, 59, lives in South Tucson, Ariz. Before the University of Arizona Health Plan assumed control of her medical care, Sepada was hospitalized 10 times in one year. After she was assigned a UAHP case manager, Sepada has been able to stay at home with no trips to the emergency department. Sarah Varney/KHN hide caption

itoggle caption Sarah Varney/KHN

The heath exchange Mississippi Insurance Commissioner Mike Chaney had in mind got turned down by the federal government. Rogelio V. Solis/AP hide caption

itoggle caption Rogelio V. Solis/AP

Gov. Bill Haslam speaks to reporters after announcing in Nashville, Tenn., on Monday that that he had decided against creating a state-run health insurance exchange. The Republican governor said he will leave it to the federal government to run the marketplace. Erik Schelzig/ASSOCIATED PRESS hide caption

itoggle caption Erik Schelzig/ASSOCIATED PRESS

MIT health economist Jonathan Gruber, who explained the ins and outs of health overhaul in a comic book, says that excluding the value of health insurance from federal taxes is a terrible idea, at least from an economist's point of view. Macmillan hide caption

itoggle caption Macmillan

The largest tax break in the federal code doesn't appear on the forms the average person fills out each year. iStockphoto.com hide caption

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Keith Gresham, 65, lines up four medications he takes at his home in Detroit in 2011. The self-employed painter was without health insurance for about a decade and was happy to finally turn 65 last year so he could qualify for Medicare. Patricia Beck/MCT/Landov hide caption

itoggle caption Patricia Beck/MCT/Landov

Medical marijuana advocates demonstrate outside a San Francisco fundraiser for President Obama in February. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images