Brenda Hummel and her 7-year-old daughter Andrea in their home near Des Moines, Iowa. Andrea was born with severe epilepsy and gets her health care through Medicaid. Clay Masters/Iowa Public Radio hide caption

itoggle caption Clay Masters/Iowa Public Radio

Enrollment counselor Vue Yang (left) reviews health insurance options for Laura San Nicolas (center), accompanied by her daughter, Geena, 17, at Sacramento Covered in Sacramento, Calif., in February. Rich Pedroncelli/AP hide caption

itoggle caption Rich Pedroncelli/AP

A Yale University study analyzed the experience of 60 million Americans covered by traditional Medicare between 1999 and 2013, and found "jaw-dropping improvements in almost every area," the lead author says. Ann Cutting/Getty Images hide caption

itoggle caption Ann Cutting/Getty Images

At sign-up events like this one in Los Angeles in 2013, Covered California pledged "affordability" in health insurance as one of its main selling points. Lucy Nicholson/Reuters/Landov hide caption

itoggle caption Lucy Nicholson/Reuters/Landov

The IRS released preliminary figures that show about three-quarters of taxpayers indicated they had qualifying health insurance in 2014. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP

One of the first signs drivers see on the way into Unionville, Mo. is this billboard advertising cardiology at Putnam County Memorial Hospital. Offering specialty services, like cardiology and psychiatry turned the hospital around, community leaders say. Bram Sable-Smith/KBIA/Side Effects Public Media hide caption

itoggle caption Bram Sable-Smith/KBIA/Side Effects Public Media

The crowd reacts as the ruling on same-sex marriage was announced outside of the Supreme Court in Washington, D.C., Friday. Jacquelyn Martin/AP hide caption

itoggle caption Jacquelyn Martin/AP

Supporters of the Affordable Care Act cheer outside the Supreme Court in Washington, D.C., after a majority on the court ruled that Obamacare tax credits can continue to go to residents of any state. Mark Wilson/Getty Images hide caption

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