Supporters of the Affordable Care Act rally in front of the U.S. Supreme Court in Washington, D.C., on March 4. The Supreme Court is considering the case of King v. Burwell, which could determine the fate of health care subsidies for millions of people. Alex Wong/Getty Images hide caption

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A Tea Party supporter rings a bell in protest of the health care law in front of the U.S. Supreme Court, as Obamacare supporters shout behind her. Alex Wong/Getty Images hide caption

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Health plans begun under the Affordable Care Act are required to cover FDA-approved contraceptive methods without cost to members. Older plans are exempt from that rule. iStockphoto 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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Retired California school teacher Mikkel Lawrence sits with his cat, Max. Lawrence has hepatitis C and has struggled to afford the medicine he needs to treat it. April Dembosky/KQED hide caption

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More than 80 percent of the people getting federal subsidies to defray the cost of their monthly health insurance premiums have jobs, statistics suggest. And many are middle class. Jen Grantham/iStockphoto hide caption

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Florida state Senate president Andy Gardiner, R-Orlando, was applauded by his fellow senators Tuesday, after expressing his disappointment with the Florida House for ending its session three days early, instead of working through the budget clash. Steve Cannon/AP hide caption

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Depending on the amount taken in subsidies, or changes in reported income and family status, some Obamacare policyholders this year will get a bigger refund than expected and others will owe more in taxes. Carolyn Kaster/AP hide caption

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Latoya Watson of Washington, D.C., cheers during a rally outside the Supreme Court on Wednesday, when the justices heard arguments in King v. Burwell. Andrew Harnik/AP hide caption

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Fans and foes of Obamacare jockeyed for position outside the Supreme Court Wednesday. Inside, the justices weighed arguments in the case of King v. Burwell, which challenges a key part of the federal health law. Pete Marovich/UPI/Landov hide caption

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Supporters of the Affordable Care Act gather in front of the U.S Supreme Court during a rally Wednesday. The court heard arguments in the case and is expected to announce its decision in June. Alex Wong/Getty Images 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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There's a second chance coming for some people who didn't buy health insurance and would face a big tax penalty for 2015 otherwise. Laughing Stock/Corbis hide caption

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Speaker of the House John Boehner, R-Ohio, pauses at a news conference before announcing that the House planned to vote Tuesday to repeal the Patient Protection and Affordable Care Act, following a GOP strategy session at Republican National Committee headquarters on Capitol Hill in Washington. While the repeal passed 239-186, it's likely to fail in the Senate or be vetoed by the president. J. Scott Applewhite/AP hide caption

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