In 2015, the Supreme Court ruled in Obergefell v. Hodges that prohibitions against same-sex marriage were unconstitutional. Gay marriage had been a divisive issue in American politics for well over a decade. Many states passed referendums and constitutional amendments barring same-sex marriages and, in 1996, Bill Clinton signed the Defense of Marriage Act, defining marriage at the federal level as between a man and a woman. In 2003, the Massachusetts Supreme Court struck down Massachusetts’ state’s prohibition, making it the first state to legally marry same-sex couples. More followed and public opinion began to turn. Although President Obama still refused to support it, by 2011 a majority of Americans believed same-sex marriages should be legally recognized. Four years later, the Supreme Court issued its Obergefell decision. The majority opinion, written by Justice Anthony Kennedy, considered the relationship between history and shifting notions of liberty and injustice.

The Constitution promises liberty to all within its reach, a liberty that includes certain specific rights that allow persons, within a lawful realm, to define and express their identity. The petitioners in these cases seek to find that liberty by marrying someone of the same sex and having their marriages deemed lawful on the same terms and conditions as marriages between persons of the opposite sex.

These cases come from Michigan, Kentucky, Ohio, and Tennessee, States that define marriage as a union between one man and one woman. … The petitioners are 14 same-sex couples and two men whose same-sex partners are deceased. The respondents are state officials responsible for enforcing the laws in question. The petitioners claim the respondents violate the Fourteenth Amendment by denying them the right to marry or to have their marriages, lawfully performed in another State, given full recognition.

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The nature of injustice is that we may not always see it in our own times. The generations that wrote and ratified the Bill of Rights and the Fourteenth Amendment did not presume to know the extent of freedom in all of its dimensions, and so they entrusted to future generations a charter protecting the right of all persons to enjoy liberty as we learn its meaning. When new insight reveals discord between the Constitution’s central protections and a received legal stricture, a claim to liberty must be addressed.

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The limitation of marriage to opposite-sex couples may long have seemed natural and just, but its inconsistency with the central meaning of the fundamental right to marry is now manifest. With that knowledge must come the recognition that laws excluding same-sex couples from the marriage right impose stigma and injury of the kind prohibited by our basic charter.

… [T]he respondents … assert the petitioners do not seek to exercise the right to marry but rather a new and nonexistent “right to same-sex marriage.” … If rights were defined by who exercised them in the past, then received practices could serve as their own continued justification and new groups could not invoke rights once denied. This Court has rejected that approach, both with respect to the right to marry and the rights of gays and lesbians.

The right to marry is fundamental as a matter of history and tradition, but rights come not from ancient sources alone. They rise, too, from a better informed understanding of how constitutional imperatives define a liberty that remains urgent in our own era. Many who deem same-sex marriage to be wrong reach that conclusion based on decent and honorable religious or philosophical premises, and neither they nor their beliefs are disparaged here. But when that sincere, personal opposition becomes enacted law and public policy, the necessary consequence is to put the imprimatur of the State itself on an exclusion that soon demeans or stigmatizes those whose own liberty is then denied. Under the Constitution, same-sex couples seek in marriage the same legal treatment as opposite-sex couples, and it would disparage their choices and diminish their personhood to deny them this right.

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Indeed, in interpreting the Equal Protection Clause, the Court has recognized that new insights and societal understandings can reveal unjustified inequality within our most fundamental institutions that once passed unnoticed and unchallenged. …

It is now clear that the challenged laws burden the liberty of same-sex couples, and it must be further acknowledged that they abridge central precepts of equality. Here the marriage laws enforced by the respondents are in essence unequal: same-sex couples are denied all the benefits afforded to opposite-sex couples and are barred from exercising a fundamental right. Especially against a long history of disapproval of their relationships, this denial to same-sex couples of the right to marry works a grave and continuing harm. The imposition of this disability on gays and lesbians serves to disrespect and subordinate them. And the Equal Protection Clause, like the Due Process Clause, prohibits this unjustified infringement of the fundamental right to marry.

These considerations lead to the conclusion that the right to marry is a fundamental right inherent in the liberty of the person, and under the Due Process and Equal Protection Clauses of the Fourteenth Amendment couples of the same-sex may not be deprived of that right and that liberty. The Court now holds that same-sex couples may exercise the fundamental right to marry. No longer may this liberty be denied to them. Baker v. Nelson must be and now is overruled, and the State laws challenged by Petitioners in these cases are now held invalid to the extent they exclude same-sex couples from civil marriage on the same terms and conditions as opposite sex couples.

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No union is more profound than marriage, for it embodies the highest ideals of love, fidelity, devotion, sacrifice, and family. In forming a marital union, two people become something greater than once they were. As some of the petitioners in these cases demonstrate, marriage embodies a love that may endure even past death. It would misunderstand these men and women to say they disrespect the idea of marriage. Their plea is that they do respect it, respect it so deeply that they seek to find its fulfillment for themselves. Their hope is not to be condemned to live in loneliness, excluded from one of civilization’s oldest institutions. They ask for equal dignity in the eyes of the law. The Constitution grants them that right.

The judgment of the Court of Appeals for the Sixth Circuit is reversed.

It is so ordered.

[Source: Obergefell v. Hodges, 576 U.S. ___ (2015). Available online via The Supreme Court (https://www.supremecourt.gov/opinions/14pdf/14-556_3204.pdf).]