Volunteer Tony Hausner, left, assists an enrollee arriving to a health insurance education and enrollment event in Silver Spring, Maryland, U.S., on Saturday, Dec. 7, 2013. Government-run health insurance exchanges are at the core of the Patient Protection and Affordable Care Act of 2010 known as Obamacare that seeks to provide access to health coverage for many of the country's estimated 48 million uninsured. Photographer: Andrew Harrer/Bloomberg via Getty Images
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