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Hollingsworth v. Perry (2013): The Supreme Court dismissed an appeal over California's Proposition 8 on jurisdictional grounds. The voter-approved ballot measure barring same-sex marriage was not defended by state officials, but rather a private party. This ruling cleared the way for same-sex marriage in California to resume, but left open-ended the legal language of 35 other states barring same-sex marriage. Take a look at other important cases decided by the high court. Andrew Harnik/The Washington Times/Landov
United States v. Windsor (2013): When her wife died in 2009, Edith Windsor, 84, was forced to pay hundreds of thousands of dollars in estate taxes because her marriage was not recognized by the federal government's Defense of Marriage Act of 1996. The Supreme Court struck down the part of the law which denied legally marriage same-sex couples the same federal benefits provided to heterosexual spouses. Mario Tama/Getty Images
National Federation of Independent Business v. Sebelius (2012): The Supreme Court upheld most of the Affordable Care Act, the Obama administration's health care reform law, on June 28, 2012. The decision determined how hundreds of millions of Americans will receive health care. Mark Wilson/Getty Images
Citizens United v. Federal Election Commission (2010): Activists rally in February 2012 to urge the Supreme Court to overturn its decision that fundamentally changed campaign finance law by allowing corporations and unions to contribute unlimited funds to political action committees not affiliated with a candidate. Getty Images
Texas v. Johnson (1989): The Supreme Court overturned the decision that convicted Gregory Lee Johnson of desecrating a venerated object after he set an American flag on fire during a protest. The court ruled that Johnson (at right with his lawyer, William Kunstler) was protected under the First Amendment right to freedom of speech. Joel Seidenstein
United States v. Nixon (1974): When President Richard Nixon claimed executive privilege over taped conversations regarding the Watergate scandal, the Supreme Court ruled that he had to turn over the tapes and other documents. The ruling set a precedent limiting the power of the president of the United States. Getty Images
Roe v. Wade (1973): Norma McCorvey, identified as "Jane Roe," sued Dallas County District Attorney Henry Wade over a law that made it a felony to have an abortion unless the life of the mother was in danger. The court agreed with Roe and overruled any laws that made abortion illegal in the first trimester. Here, McCorvey, left, stands with her attorney Gloria Allred in 1989. GREG GIBSON/AFP/Getty Images
Miranda v. Arizona (1966): Ernesto Miranda confessed to a crime without the police informing him of his right to an attorney or right against self-incrimination. His attorney argued in court that the confession should have been inadmissible, and in 1966, the Supreme Court agreed. The term "Miranda rights" has been used since. University of Texas School of Law
Gideon v. Wainwright (1963): The Supreme Court overturned the burglary conviction of Clarence Earl Gideon after he wrote to the court from his prison cell, explaining he was denied the right to an attorney at his 1961 trial. Office of Ohio Public Defender
Mapp v. Ohio (1961): The Supreme Court overturned the conviction of Dollree Mapp because the evidence collected against her was obtained during an illegal search. The ruling re-evaluated the Fourth Amendment, which protects citizens against unreasonable searches and seizures. The University of Texas School of Law
Brown v. Board of Education (1954): Nathaniel Steward recites his lesson surrounded by white classmates at the Saint-Dominique School in Washington. In Brown v. Board of Education, the Supreme Court ruled that it was unconstitutional to separate students based on race. STAFF/AFP/Getty Images
Korematsu v. United States (1944): Fred Korematsu, a Japanese-American man, was arrested after authorities found out that he claimed to be a Mexican-American to avoid an internment camp during World War II. The court ruled that the rights of an individual were not as important as the need to protect the country during wartime. In 1998, President Bill Clinton awarded Korematsu the Presidential Medal of Freedom. PAUL J. RICHARDS/AFP/Getty Images
Plessy v. Ferguson (1896): Homer Plessy was arrested when he refused to leave a whites-only segregated train car, claiming he was 7/8 white and only 1/8 black. The Supreme Court ruled that "separate but equal" facilities for blacks were constitutional, which remained the rule until Brown v. Board of Education in 1954. Digital Library of Georgia
Dred Scott v. Sandford (1857): When Dred Scott asked a circuit court to reward him his freedom after moving to a free state, the Supreme Court ruled that Congress didn't have the right to prohibit slavery and, further, that those of African-American descent were not protected by the Constitution. Hulton Archive/Getty Images
Gibbons v. Ogden (1824): This was the first case to establish Congress' power to regulate interstate commerce. The ruling signaled a shift in power from the states to the federal government. Aaron Ogden, seen here, was given exclusive permission from the state of New York to navigate the waters between New York and certain New Jersey ports. When Ogden brought a lawsuit against Thomas Gibbons for operating steamships in his waters, the Supreme Court sided with Gibbons. Hulton Archive/Getty Images
McCulloch v. Maryland (1819): In response to the federal government's controversial decision to institute a national bank in the state, Maryland tried to tax the bank out of business. When a federal bank cashier, James W. McCulloch, refused to pay the taxes, the state of Maryland filed charges against him. In McCulloch v. Maryland, the Supreme Court ruled that chartering a bank was an implied power of the Constitution. The first national bank, pictured, was created by Congress in 1791 in Philadelphia. MPI/Getty Images
Marbury v. Madison (1803): When Secretary of State James Madison, seen here, tried to stop Federal loyalists from being appointed to judicial positions, he was sued by William Marbury. Marbury was one of former President John Adams' appointees, and the court decided that although he had a right to the position, the court couldn't enforce his appointment. The case defined the boundaries of the executive and judicial branches of government. MPI/Getty Images
