Judge Vaughn Walker struck down California's proposition banning gay marriage in 2010. The Supreme Court kept that ruling intact on Wednesday. Elaine Thompson/AP hide caption

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One of the attorneys in the California Proposition 8 case, David Boies (center), speaks outside the Supreme Court as he's surrounded by plaintiffs in the case, couples Paul Katami (from left) and Jeff Zarrillo, and Sandy Stier and Kris Perry. Mark Wilson/Getty Images hide caption

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Supporters of the NAACP hold signs outside the Supreme Court building on Tuesday. The court ruled that Section 4 of the Voting Rights Act, which aimed at protecting minority voters, is unconstitutional. Win McNamee/Getty Images hide caption

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Students calling for diversity protest outside the Supreme Court in Washington, D.C., on Oct 10, 2012. Jose Luis Magana/Reuters/Landov hide caption

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People line up to enter the Supreme Court building on April 22, when the court heard arguments in the Agency for International Development v. Alliance for Open Society International case. Mark Wilson/Getty Images hide caption

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A copy of the U.S. Foreign Intelligence Surveillance Court order requiring Verizon to give the National Security Agency information about calls in its systems, both within the U.S. and between the U.S. and other countries. AP hide caption

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A technician loads patient samples into a machine for testing at Myriad Genetics in Salt Lake City in 2002. The Supreme Court ruled Thursday that Myriad cannot patent the BRCA genes, which are tested to check a woman's risk for breast and ovarian cancer. Douglas C. Pizac/AP hide caption

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Chief Justice Margaret Marshall asks petitioner to explain a point during arguments before the Supreme Judicial Court in Boston in 2005. George Rizer/AP hide caption

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The U.S. Supreme Court ruled Monday in a case that looked at whether police could take DNA samples from people who had been arrested but not yet convicted of a crime. Alex Brandon/AP hide caption

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The Supreme Court declined to intervene in a case involving Medicaid payments to Planned Parenthood. J. Scott Applewhite/AP hide caption

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