With help from the Affordable Care Act, government fraud investigators will make more use of computer programs to detect Medicare and Medicaid scams. iStockphoto.com hide caption

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A budget crunch in Oregon led to an unintended experiment that helped researchers assess Medicaid's effect on adults' health. iStockphoto.com hide caption

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When the U.S. Supreme Court made a Medicaid expansion optional under the Affordable Care Act, the decision lowered the estimated cost of the law. Chip Somodevilla/Getty Images hide caption

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Virginia Gov. Bob McDonnell says Medicaid should be overhauled before it's expanded. Cliff Owen/AP hide caption

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Texas Gov. Rick Perry is the latest state executive to say no to an expansion of Medicaid. Win McNamee/Getty Images hide caption

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Protesters and supporters of President Obama's health care law await the Supreme Court's ruling Thursday. The court ruled to uphold the law. The focus now shifts to the states, which are responsible for the lion's share of getting people without insurance covered. Kevin Dietsch/UPI /Landov hide caption

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When the U.S. Supreme Court rules Thursday on the constitutionality of the Affordable Care Act, it will also rule on whether the expansion of Medicaid is an unconstitutional infringement of states' rights. Adam Cole/NPR hide caption

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Katie Beckett fits herself with a vibrating vest that helps clear mucous from her lungs. A nurse comes over to her apartment in Cedar Rapids to help her do this twice a day. On the wall to the right are pictures of Katie as a child with Ronald Reagan. This story starts twenty-nine years ago with an angry President Ronald Reagan. <> We just recently received word of a little girl who has spent most of her life in a hospital. <> The little girl in the hospital was three-year-old Katie Beckett. Because of a brain infection, she needed to be hooked to a ventilator at night to breathe. Her parents wanted her home. Her doctors said she'd be better off at home. And it'd be cheaper, too: Just one-sixth the cost. John Poole/NPR hide caption

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