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

itoggle caption iStockphoto.com

Firefighter John Lauer, seen at the scene of a wildfire in Montana, led a campaign for health coverage of seasonal firefighters and their families. Courtesy of John Lauer/AP hide caption

itoggle caption Courtesy of John Lauer/AP

Kailash Sundaran (left), Devyn Greenberg and Devontae Freeland celebrate the Supreme Court's ruling upholding the Affordable Health Care Act outside the court Thursday. Alex Wong/Getty Images hide caption

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Jackson Cahn, who graduated from Whitman College in Walla Walla, Wash., is one of the 3 million young adults the Obama administration says would have risked going without insurance if the health care law hadn't allowed them to stay on their parents' policies. Because of the law, his mother, June Blender, was able to add him to her insurance. Courtesy of June Blender hide caption

itoggle caption Courtesy of June Blender

Attorney Paul Clement argued against the heath care overhaul at the Supreme Court in March. The decision on the law's constitutionality is expected any day. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP

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

itoggle caption John Rose/NPR