History of same-sex marriage in the United States

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In the United States, the history of same-sex marriage dates from the early 1940s, when the first lawsuits seeking legal recognition of same-sex relationships brought the question of civil marriage rights and benefits for same-sex couples to public attention though they proved unsuccessful. However marriage wasn't a request for the LGBTQ movement until the Second National March on Washington for Lesbian and Gay Rights in Washington (1987).^[1] The subject became increasingly prominent in U.S. politics following the 1993 Hawaii Supreme Court decision in Baehr v. Miike that suggested the possibility that the state's prohibition might be unconstitutional. That decision was met by actions at both the federal and state level to restrict marriage to male-female couples, notably the enactment at the federal level of the Defense of Marriage Act.

The first legal same-sex marriage ceremony in the United States happened on February 12, 2004 between Del Martin and Phyllis Lyon, when mayor of San Francisco Gavin Newsom ordered city hall to issue marriage licenses to same-sex couples. This decision resulted in the celebration of the first gay marriage in the United States, when Martin and Lyon became the first gay couple to tie the knot and get official recognition of their fifty year relationship (Marriage Equality New York).

On May 17, 2004, Massachusetts became the first U.S. state and the sixth jurisdiction in the world to legalize same-sex marriage following the Supreme Judicial Court's decision in Goodridge v. Department of Public Health six months earlier. Just as with the Hawaii decision, the legalization of same-sex marriage in Massachusetts provoked a reaction from opponents of same-sex marriage that resulted in further legal restrictions being written into state statutes and constitutions. The movement to obtain marriage rights for same-sex couples expanded steadily from that time until in late 2014 lawsuits had been brought in every state that still denied marriage licenses to same-sex couples.

By late 2014, same-sex marriage had become legal in states that contained more than 70% of the United States population. In some jurisdictions legalization came through the action of state courts or the enactment of state legislation. More frequently it came as the result of the decisions of federal courts. On November 6, 2012, Maine, Maryland, and Washington became the first states to legalize same-sex marriage through popular vote. Same-sex marriage has been legalized in the District of Columbia and 21 Native American tribal nations as well.

The June 2013 decision of the U.S. Supreme Court in United States v. Windsor striking down the law barring federal recognition of same-sex marriage gave significant impetus to the progress of lawsuits that challenged state bans on same-sex marriage in federal court. Since that decision, with only a few exceptions, U.S. District Courts and Courts of Appeals have found state bans on same-sex marriage unconstitutional, as have several state courts. The exceptions have been a state court in Tennessee, U.S. district courts in Louisiana and Puerto Rico, and the U.S. Court of Appeals for the Sixth Circuit. The U.S. Supreme Court agreed to hear appeals from that circuit's decision.

On June 26, 2015, the U.S. Supreme Court struck down all state bans on same-sex marriage, legalized it in all fifty states, and required states to honor out-of-state same-sex marriage licenses in the case Obergefell v. Hodges.