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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The scene outside the U.S. Supreme Court on Thursday, when the justices released their ruling on President Obama's health care law. Alex Wong/Getty Images hide caption

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Joy Reynolds of San Diego, Calif., looks over Friday's front pages on display at the Newseum in Washington, the day after the Supreme Court ruling on President Barack Obama's health care law. David Goldman/AP hide caption

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Demonstrators both for and against the health care law turned out on the steps of the Supreme Court on March 27, the second day of oral arguments before the court. John Rose/NPR hide caption

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Protesters at the Supreme Court as the court concluded hearing arguments on the health care law. Carolyn Kaster/AP hide caption

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The Colorado Coalition for the Homeless runs the Stout Street Clinic in Denver, helped Dale Miller get a CT scan. Colorado Coalition for the Homeless hide caption

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