The availability of legally recognized same-sex marriage in the United States expanded from one state (Massachusetts) in 2004 to all fifty states in 2015 through various court rulings, state legislation, and direct popular votes. States each have separate marriage laws, which must adhere to rulings by the Supreme Court of the United States that recognize marriage as a fundamental right guaranteed by both the Due Process Clause and the Equal Protection Clause of the Fourteenth Amendment to the United States Constitution, as first established in the 1967 landmark civil rights case of Loving v. Virginia.
Many laws in the history of the United States have addressed marriage and the rights of married people. Common themes addressed by these laws include polygamy, interracial marriage, divorce, and same-sex marriage.
Eisenstadt v. Baird, 405 U.S. 438 (1972), was a landmark decision of the U.S. Supreme Court that established the right of unmarried people to possess contraception on the same basis as married couples.
Same-sex marriage has been legal in Florida since January 6, 2015, as a result of a ruling in Brenner v. Scott from the U.S. District Court for the Northern District of Florida. The court ruled the state's same-sex marriage ban unconstitutional on August 21, 2014. The order was stayed temporarily. State attempts at extending the stay failed, with the U.S. Supreme Court denying further extension on December 19, 2014. In addition, a state court ruling in Pareto v. Ruvin allowed same-sex couples to obtain marriage licenses in Miami-Dade County on the afternoon of January 5, 2015. In another state case challenging the state's denial of marriage rights to same-sex couples, a Monroe County court in Huntsman v. Heavilin stayed enforcement of its decision pending appeal and the stay expired on January 6, 2015.
Same-sex marriage has been legally recognized in Iowa since a decision of the Iowa Supreme Court on April 3, 2009. Marriage licenses became available to same-sex couples on April 27. In 2005, six same-sex couples who were denied marriage licenses in Iowa filed a lawsuit in Polk County. In 2007, the Polk County District Court ruled in favor of the couples in Varnum v. Brien. On April 3, 2009, the Iowa Supreme Court unanimously upheld the lower court's ruling, making Iowa the third U.S. state to legalize same-sex marriage, after Massachusetts and Connecticut.
Lesbian, gay, bisexual, and transgender (LGBT) persons in the U.S. state of Louisiana may face some legal challenges not experienced by non-LGBT residents. Same-sex sexual activity is legal in Louisiana as a result of the US Supreme Court decision in Lawrence v. Texas, although the state legislature has not repealed its sodomy laws. Same-sex marriage has been recognized in the state since June 2015 as a result of the Supreme Court's decision in Obergefell v. Hodges.
Same-sex marriage has been legal in Louisiana since the U.S. Supreme Court's ruling in Obergefell v. Hodges on June 26, 2015. The court held that the denial of marriage rights to same-sex couples is unconstitutional, invalidating Louisiana's ban on same-sex marriage. The ruling clarified conflicting court rulings on whether state officials are obligated to license same-sex marriages. Governor Bobby Jindal confirmed on June 28 that Louisiana would comply with the ruling once the Fifth Circuit Court of Appeals reversed its decision in a Louisiana case, which the Fifth Circuit did on July 1. Jindal then said the state would not comply with the ruling until the U.S. District Court for the Eastern District of Louisiana reversed its judgment, which it did on July 2. All parishes now issue marriage licenses in accordance with federal law.
The American Foundation for Equal Rights (AFER) was a nonprofit organization active in the United States from 2009 through 2015. The organization was established to support the plaintiffs in Hollingsworth v. Perry, a federal lawsuit challenging California's Proposition 8 under the Due Process and Equal Protection Clauses of the Fourteenth Amendment to the United States Constitution. AFER retained former United States Solicitor General Theodore B. Olson and David Boies to lead the legal team representing the plaintiffs challenging Proposition 8.
Lesbian, gay, bisexual, and transgender (LGBT) persons in the U.S. state of Arkansas may face some legal challenges not experienced by non-LGBT residents. Same-sex sexual activity is legal in Arkansas. Same-sex marriage became briefly legal through a court ruling on May 9, 2014, subject to court stays and appeals. In June 2015, the U.S. Supreme Court ruled in Obergefell v. Hodges that laws banning same-sex marriage are unconstitutional, legalizing same-sex marriage in the United States nationwide including in Arkansas. Nonetheless, discrimination on the basis of sexual orientation and gender identity was not banned in Arkansas until the Supreme Court banned it nationwide in Bostock v. Clayton County in 2020.
Lesbian, gay, bisexual, transgender, and queer (LGBTQ) persons in the U.S. state of Missouri face some legal challenges not experienced by other residents throughout the state, excluding St. Louis, Kansas City, and Columbia. Same-sex sexual activity is legal in Missouri.
Lesbian, gay, bisexual, and transgender (LGBT) persons in the U.S. state of Montana may face some legal challenges not experienced by non-LGBT residents. Same-sex sexual activity has been legal in Montana since 1997. Same-sex couples and families headed by same-sex couples are eligible for all of the protections available to opposite-sex married couples, as same-sex marriage has been recognized since November 2014. State statutes do not address discrimination on the basis of sexual orientation and gender identity; however, the U.S. Supreme Court's ruling in Bostock v. Clayton County established that employment discrimination against LGBT people is illegal under federal law. A number of cities also provide protections in housing and public accommodations.
Lesbian, gay, bisexual, and transgender (LGBT) persons in the U.S. state of Oklahoma may face some legal challenges not experienced by non-LGBT residents. Same-sex sexual activity is legal in Oklahoma as a result of the U.S. Supreme Court decision in Lawrence v. Texas, although the state legislature has not repealed its sodomy laws. Both same-sex marriage and adoption by same-sex couples have been permitted since October 2014. State statutes do not prohibit discrimination based on sexual orientation or gender identity; however, the U.S. Supreme Court's ruling in Bostock v. Clayton County established that employment discrimination against LGBT people is illegal. This practice may still continue, as Oklahoma is an at-will employment state and it is still legal to fire an employee without requiring the employer to disclose any reason.
Until 2017, laws related to LGBTQ+ couples adopting children varied by state. Some states granted full adoption rights to same-sex couples, while others banned same-sex adoption or only allowed one partner in a same-sex relationship to adopt the biological child of the other. Despite these rulings, same-sex couples and members of the LGBTQ+ community still face discrimination when attempting to foster children.
Same-sex marriage has been legally recognized in Nebraska since June 26, 2015, when the U.S. Supreme Court ruled in the case of Obergefell v. Hodges that the denial of marriage rights to same-sex couples violates the Fourteenth Amendment. Following the court ruling, Attorney General Doug Peterson announced that the state of Nebraska would comply and recognize same-sex marriages.
Same-sex marriage has been legal in Oklahoma since October 6, 2014, following the resolution of a lawsuit challenging the state's ban on same-sex marriage. On that day, following the U.S. Supreme Court's refusal to review Bishop v. Smith, a case that had found the ban unconstitutional, the Tenth Circuit Court of Appeals ordered Oklahoma to recognize same-sex marriages. On January 14, 2014, Judge Terence C. Kern of the U.S. District Court for the Northern District of Oklahoma declared the state's statutory and constitutional same-sex marriage bans unconstitutional. The case, Bishop v. Smith, was stayed pending appeal. On July 18, 2014, a panel of the Tenth Circuit upheld Kern's ruling overturning Oklahoma's same-sex marriage ban. However, the panel put its ruling on hold pending disposition of a petition for certiorari by the U.S. Supreme Court. On October 6, 2014, the U.S. Supreme Court rejected the request for review, leaving the Tenth Circuit Court's ruling in place. State officials responded by implementing the Tenth Circuit's ruling, recognizing same-sex marriage in the state.
Tanco v. Haslam was the lead case in the dispute of same-sex marriage in Tennessee. A U.S. District Court granted a preliminary injunction requiring the state to recognize the marriages of the plaintiffs, three same-sex couples. The court found the equal protection analysis used in Bourke v. Beshear, a case dealing with a comparable Kentucky statute "especially persuasive." On April 25, 2014, that injunction was stayed by the Sixth Circuit Court of Appeals. Tanco was appealed to the Sixth Circuit, which reversed the district court and upheld Tennessee's refusal to recognize same-sex marriages from other jurisdictions on November 6.
De Leon v. Perry was a federal lawsuit challenging Texas marriage law, specifically the state's constitutional ban on same-sex marriage and corresponding statutes. A U.S. district court ruled in favor of the plaintiff same-sex couples on February 26, 2014, granting their motion for a preliminary injunction. The state defendants filed an interlocutory appeal before the United States Court of Appeals for the Fifth Circuit, as the disposition on the motion was not a final ruling in the case. On April 14, 2014, the plaintiffs filed a motion for an expedited hearing, which was denied on May 21, 2014. The plaintiffs filed another motion for an expedited hearing on October 6, 2014, after the Supreme Court of the United States denied appeals in other marriage equality cases, and the motion was granted on October 7, 2014, setting a hearing for November 2014. However, on October 27, 2014, the Fifth Circuit set oral arguments for January 9, 2015.
In Brenner v. Scott and its companion case, Grimsley v. Scott, a U.S. district court found Florida's constitutional and statutory same-sex marriage bans unconstitutional. On August 21, 2014, the court issued a preliminary injunction that prevents that state from enforcing its bans and then stayed its injunction until stays are lifted in the three same-sex marriage cases then petitioning for a writ of certiorari in the U.S. Supreme Court–Bostic, Bishop, and Kitchen–and for 91 days thereafter. When the district court's preliminary injunction took effect on January 6, 2015, enforcement of Florida's bans on same-sex marriage ended.
Obergefell v. Hodges, 576 U.S. 644 (2015), is a landmark decision of the Supreme Court of the United States which ruled that the fundamental right to marry is guaranteed to same-sex couples by both the Due Process Clause and the Equal Protection Clause of the Fourteenth Amendment of the Constitution. The 5–4 ruling requires all fifty states, the District of Columbia, and the Insular Areas to perform and recognize the marriages of same-sex couples on the same terms and conditions as the marriages of opposite-sex couples, with all the accompanying rights and responsibilities. Prior to Obergefell, same-sex marriage had already been established by statute, court ruling, or voter initiative in thirty-six states, the District of Columbia, and Guam.
Henderson v. Box was a case in which the United States Court of Appeals for the Seventh Circuit ruled that Indiana must list same-sex parents on their child's birth certificate. The case was brought before the court by eight lesbian couples from Indiana who conceived through artificial insemination.
