Secretary of Health and Human Services Sylvia Burwell talks before a Capitol Hill hearing Wednesday with Rep. Paul Ryan, R-Wis., as Rep. Pat Meehan, R-Pa., looks on. Getty Images hide caption

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People protesting against the Affordable Care Act rallied outside the Supreme Court in March, before arguments in the second major challenge to the law. Jim Lo Scalzo/EPA/Landov hide caption

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Opponents of the Affordable Care Act protest outside the Supreme Court Wednesday before oral arguments in the second major challenge to be heard by the justices. Jim Lo Scalzo/EPA/Landov hide caption

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Speaker of the House John Boehner, R-Ohio, leaves the chamber Feb. 3 after another House vote to repeal the Patient Protection and Affordable Care Act. J. Scott Applewhite/AP hide caption

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Jose Ramirez and Mariana Silva speak in December with Yosmay Valdivia (right), an agent from Sunshine Life and Health Advisors, at the Mall of the Americas in Miami about plans available from the Affordable Care Act. Joe Raedle/Getty Images hide caption

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This flea market in Colorado Springs and the Obamacare exchanges are versions of the same thing — marketplaces where sellers display wares and shoppers browse and buy. www.csfleamarket.com hide caption

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The tax penalty is designed to encourage people to sign up for health insurance. iStockphoto hide caption

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Yolanda Madrid of Miami (left) talks with navigator Daniela Campos while signing up for health insurance under the Affordable Care Act in January. Lynne Sladky/AP hide caption

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Yuvania Maldonado, a counselor for President Obama's health care law, speaks with Chicago taxi driver Mohammad Chaudri at a city office where taxi drivers go to renew their license. M. Spencer Green/AP hide caption

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There's confusion about whether drugmakers can provide financial assistance to patients who buy health insurance on the exchanges. Roel Smart/iStockphoto hide caption

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