Historical Context of Marriage Rights

The legal recognition of marriage in the United States has evolved dramatically over the past several decades. For most of American history, marriage laws were exclusively defined as the union of one man and one woman, a definition that systematically excluded same-sex couples. By the 1990s, however, societal attitudes began to shift, prompting a wave of state-level legislative battles. In 1993, the Hawaii Supreme Court’s decision in Baehr v. Lewin suggested that denying marriage to same-sex couples might violate the state constitution, which spurred a national backlash. Congress responded with the Defense of Marriage Act (DOMA) in 1996, which defined marriage as between a man and a woman for federal purposes and allowed states to refuse recognition of same-sex marriages performed elsewhere. At the state level, between 1998 and 2008, more than 30 states passed constitutional amendments or statutes explicitly banning same-sex marriage. These measures were often passed by large margins in ballot initiatives, reflecting deep divisions in public opinion. For example, in 2004, Ohio, Kentucky, and Michigan all adopted amendments prohibiting both same-sex marriage and any legal recognition of same-sex relationships. Meanwhile, a handful of states began to move in the opposite direction. Vermont created the first civil union law in 2000, and Massachusetts became the first state to legalize same-sex marriage via a court ruling in 2003. This patchwork of state laws created a volatile legal environment where the rights of same-sex couples depended entirely on their state of residence.

The Obergefell Decision and Its Immediate Aftermath

The U.S. Supreme Court’s ruling in Obergefell v. Hodges (2015) fundamentally upended that patchwork. In a 5-4 decision, the Court held that same-sex couples have a fundamental right to marry under the Fourteenth Amendment’s Due Process and Equal Protection Clauses, effectively legalizing same-sex marriage nationwide. The ruling struck down all remaining state-level bans and required every state to both perform and recognize same-sex marriages. The immediate aftermath saw a flurry of compliance actions across most states. Within days, county clerks in states like Alabama and Texas, which had previously resisted, were ordered by federal courts to issue marriage licenses to same-sex couples. However, the Obergefell decision did not end the controversy. Several states, particularly in the South and Midwest, responded by passing laws that sought to carve out exceptions to marriage equality, often under the guise of protecting religious freedom. These laws ranged from allowing county clerks to recuse themselves from issuing same-sex marriage licenses (due to religious objections) to creating broad state-level religious exemptions that could be used to deny services to same-sex couples. The ruling also sparked a series of legal backlashes. In Masterpiece Cakeshop v. Colorado Civil Rights Commission (2018), the Supreme Court ruled in favor of a baker who refused to create a wedding cake for a same-sex couple, citing religious objections, though the decision was narrow and did not establish a broad exemption from anti-discrimination laws. The Obergefell decision thus created a new frontier of state-level policymaking: balancing the constitutional right to marry with the First Amendment rights of religious objectors.

State-Level Legislative Responses

In the decade following Obergefell, state legislatures have taken sharply divergent paths. Some states have moved aggressively to codify and expand marriage rights, while others have enacted laws that chip away at the protections established by the ruling. The results have been a continuing legal fragmentation, albeit one that now operates under a federal baseline.

States Expanding Protections

Several states have passed laws that go beyond the Obergefell mandate by explicitly protecting same-sex marriage and related rights in state statutes or constitutions. For example, California voters repealed Proposition 8 in a 2013 court ruling, and in 2014, the state legislature passed the Respect the Marriage Act, which codified marriage equality under state law. In 2022, California further extended protections by ensuring that same-sex marriages performed in the state would still be recognized even if the federal ruling were ever overturned. New York passed the Marriage Equality Act in 2011, before Obergefell, and has since enacted strong anti-discrimination protections that cover sexual orientation and gender identity in marriage-related contexts. Illinois, which legalized same-sex marriage in 2014, has also passed laws requiring health insurers to cover infertility treatments for same-sex couples equally. In 2023, Maryland passed legislation that removed outdated references to husband and wife from its family law statutes, replacing them with gender-neutral language. These expansions reflect a broader trend of progressive states using marriage rights as a foundation for broader LGBTQ+ equality.

States Resisting or Limiting

Conversely, other states have used legislative tools to limit the impact of Obergefell. While they cannot prohibit same-sex marriage, they have enacted laws that make it more difficult for same-sex couples to exercise their rights or that create legal gray areas. For example, in 2016, Mississippi passed the “Protecting Freedom of Conscience from Government Discrimination Act,” which allowed merchants, employers, and officials to refuse service to same-sex couples based on religious beliefs. This law was later partially struck down in federal court, but the legal uncertainty remained for years. In 2019, Texas passed a law allowing foster care agencies to refuse to place children with same-sex couples if it conflicted with their religious beliefs. Alabama, in 2022, passed a law that encouraged county probate judges to issue no marriage licenses at all if they objected to same-sex unions, a practice that had been common even after Obergefell. South Dakota considered bills in 2023 that would have allowed state officials to refuse to solemnize marriages that violated their conscience. While many of these bills were defeated or modified, they demonstrate ongoing legislative efforts to restrict the practical reach of marriage equality. Additionally, some states have actively refused to update their tax forms to reflect same-sex marriage, or have failed to provide clear guidance on how married same-sex couples should file state taxes jointly, creating administrative burdens.

Broader Policy Implications

The impact of marriage rights extends far beyond the wedding ceremony itself. The legal status of marriage triggers a cascade of benefits and responsibilities in nearly every area of public policy. The Obergefell decision required states to treat same-sex couples as legally married for all purposes, but state-level implementation has been uneven, leading to real consequences.

Health Care and Insurance

One of the most immediate effects of marriage equality was on health insurance. Before Obergefell, many employers did not offer spousal health coverage to same-sex partners, even if they were married in a state that recognized the union. After the ruling, same-sex spouses gained the same access to employer-sponsored health insurance, COBRA continuation coverage, and FMLA leave for spousal care. However, state-level regulations on insurance often lag behind. For instance, some states still allow insurers to charge higher premiums for same-sex spouses or to deny coverage for certain services, such as in-vitro fertilization, even when those services are covered for opposite-sex couples. In states with strong anti-discrimination laws, such as New York and California, these gaps have been closed; in others, same-sex couples may still face disparities. A 2021 report by the Human Rights Campaign found that only 22 states have explicit laws prohibiting health insurance discrimination based on sexual orientation, meaning that in the remaining states, same-sex spouses can legally be charged more or denied coverage for medically necessary procedures.

Adoption and Family Law

Marriage rights have also profoundly affected family formation. Prior to Obergefell, same-sex couples in many states faced barriers to joint adoption, second-parent adoption, and recognition of parental rights. The legalization of marriage gave same-sex spouses the same presumptions of parentage that apply to opposite-sex married couples. This means that when a married same-sex couple has a child (whether through assisted reproduction, surrogacy, or adoption), both spouses are automatically recognized as legal parents in all jurisdictions. However, state laws still vary. In some states, a married same-sex couple may still need to go through a formal adoption process to secure parental rights for the non-biological parent, especially in states that have not explicitly adopted the Uniform Parentage Act. For example, in Ohio, a state that fought Obergefell in court, some probate judges have been slow to recognize the parental rights of same-sex spouses, leading to heart-wrenching cases where a surviving spouse has had to fight for custody of their own child. In contrast, states like Washington and Oregon have explicit statutes that treat same-sex parents equally. The Child Welfare Information Gateway provides state-specific guides on adoption laws affecting LGBTQ+ families.

Taxation and Inheritance

Federal tax law has treated same-sex married couples equally since the Supreme Court struck down Section 3 of DOMA in United States v. Windsor (2013). This means same-sex couples can file joint federal tax returns, claim spousal exemptions, and avoid estate tax through unlimited marital deductions. However, state tax treatment remains a patchwork. In states that conform to federal tax law (most do), state tax filing follows the same rules. But in a few states, like Ohio and Texas, there have been disputes over whether state tax laws automatically recognize federal marriage status for tax purposes. For inheritance, marriage ensures that a surviving spouse inherits under intestacy laws, and can claim a share of the estate even without a will. This protection was a central argument in Obergefell—plaintiffs wanted the security that their relationship would be recognized in life and in death. Still, some states have provisions that allow individuals to disinherit a spouse through prenuptial agreements, but the baseline protection remains. The American Bar Association has published a guide to estate planning for same-sex couples that highlights the importance of updating wills and trusts to reflect state-specific laws.

Anti-Discrimination Measures

Marriage rights have served as a catalyst for broader anti-discrimination legislation. Many states that legalized same-sex marriage early, like Iowa and Massachusetts, subsequently passed laws prohibiting discrimination based on sexual orientation and gender identity in employment, housing, and public accommodations. In the years after Obergefell, several states—including Nebraska, Kansas, and Arizona—considered but ultimately rejected comprehensive nondiscrimination bills. Others, like Colorado, used marriage equality as a stepping stone to pass strong protections. The tie between marriage rights and nondiscrimination laws is evident in the Equality Act, a federal bill introduced multiple times that would explicitly ban discrimination on the basis of sexual orientation and gender identity in employment, housing, credit, and public accommodations. While the Equality Act has not passed, it has been adopted as a model by states like New York, California, and Washington. Conversely, states that have resisted marriage equality have also been less likely to pass nondiscrimination laws. As of 2025, 22 states still lack explicit state-level protections for LGBTQ+ individuals in employment, and 27 states lack such protections in housing, according to the ACLU’s state-by-state map.

Ongoing Challenges and Future Directions

Despite the legal stability provided by Obergefell, challenges to marriage rights continue to proliferate at the state level. The most persistent challenge comes from the intersection of marriage equality and religious liberty. In several states, lawmakers have introduced or passed bills that allow individuals, businesses, and government officials to refuse to facilitate or participate in same-sex marriages based on sincerely held religious beliefs. For example, in 2023, Oklahoma enacted a law that permits adoption agencies to refuse placements that conflict with their religious or moral convictions, effectively allowing discrimination against same-sex couples. Similar bills were considered in Montana, Arkansas, and Louisiana. These laws often create a conflict between the rights of same-sex spouses and the rights of religious objectors, a conflict that has not been fully resolved by the Supreme Court. The 2024 term saw the Court agree to hear 303 Creative LLC v. Elenis, a case involving a web designer who refused to create wedding websites for same-sex couples. The Court’s eventual ruling, expected in 2025, could have significant implications for the scope of religious exemptions in marriage-related services. Another open question is whether Obergefell itself could ever be overturned. While the current Supreme Court has shown no appetite for that specific case, the appointment of justices sympathetic to originalist interpretations of the Constitution has raised concerns among advocates. In the wake of the 2022 Dobbs decision overturning Roe v. Wade, Justice Clarence Thomas wrote a concurring opinion suggesting that Obergefell and other substantive due process precedents should be reconsidered. This has spurred efforts in Congress to codify marriage equality at the federal level. The Respect for Marriage Act, signed into law in December 2022, requires the federal government to recognize same-sex marriages and requires states to recognize marriages from other states, but it does not require every state to perform them. This law creates a safety net: even if Obergefell were overturned, same-sex marriages would still be recognized by the federal government and by states that have them, but states could potentially re-ban marriage for their own residents. In response, several state legislatures have preemptively introduced bills to protect marriage equality in their own state statutes, including Massachusetts, Vermont, and New Jersey.

Conclusion

The impact of marriage rights on state-level public policy and legislation has been deep and multidimensional. From the initial battles over constitutional amendments to the post-Obergefell era of exemption laws and protective expansions, marriage equality has reshaped how states approach family law, health care, taxation, antidiscrimination, and religious liberty. The past decade has shown that a federal ruling is not the end of the story; state legislatures continue to be battlegrounds where the practical meaning of marriage equality is defined. As the legal landscape evolves, the interplay between state sovereignty, individual rights, and religious freedom will remain a central fixture of American jurisprudence. The future of marriage rights at the state level will depend on the collective actions of legislatures, courts, and voters, ensuring that this area of public policy remains dynamic and contested for years to come.