Roe v. Wade — Historical Right to Abortion and the Trimester Framework

Roe v. Wade, 410 U.S. 113 (1973), was the landmark Supreme Court decision that established a constitutional right to abortion under the Due Process Clause of the Fourteenth Amendment — a right that was overruled in Dobbs v. Jackson Women's Health Organization, 597 U.S. 215 (2022). For 49 years, Roe defined the constitutional landscape of abortion regulation in the United States, giving pregnant women a fundamental right to terminate a pregnancy that states could limit only as the pregnancy progressed. Understanding Roe — its holding, its doctrinal framework, and the political and legal controversy it generated — is essential context for understanding the current post-Dobbs landscape, where abortion regulation has returned entirely to the states. Roe held that the Constitution's guarantee of liberty under the Due Process Clause protects "a woman's decision whether to terminate her pregnancy" as a fundamental right. The Court divided pregnancy into three trimesters and applied different levels of state regulatory authority at each stage. The decision was authored by Justice Blackmun and joined by six justices. Justice Rehnquist and Justice White dissented. Roe was partially modified by Planned Parenthood v. Casey (1992), which replaced the trimester framework with the "undue burden" standard but reaffirmed what Casey called Roe's "essential holding." Dobbs overruled both Roe and Casey in June 2022, holding that the Constitution confers no right to abortion and returning the issue to democratic resolution by the states.

Current Law (2026)

Key Mechanics

Roe v. Wade, 410 U.S. 113 (1973) — recognized a constitutional right to abortion derived from the liberty interest in the Fourteenth Amendment's Due Process Clause, building on the privacy right established in Griswold v. Connecticut (1965). Justice Blackmun's majority opinion established a trimester framework: (1) First trimester — the state may not regulate abortion at all; the decision is between the patient and physician; (2) Second trimester — the state may regulate abortion only to protect maternal health (e.g., facility requirements, provider standards); (3) Third trimester/viability — once the fetus reaches viability (approximately 28 weeks in 1973), the state may prohibit abortion entirely, except where necessary to preserve the life or health of the mother. Planned Parenthood v. Casey (1992) replaced the trimester framework with the undue burden test: a state regulation is unconstitutional if its purpose or effect is to place a substantial obstacle in the path of a woman seeking an abortion before viability. Casey upheld Roe's "essential holding" but allowed broader pre-viability regulation. Dobbs v. Jackson Women's Health Organization, 597 U.S. 215 (2022) — overruled both Roe and Casey. The Court held the Constitution does not confer a right to abortion; abortion is not "deeply rooted in this Nation's history and tradition" as required by the Washington v. Glucksberg framework for substantive due process rights. Abortion regulation was returned to the states. Rational basis review now applies to state abortion laws. Roe and Casey are historical law — they describe the framework that governed from 1973 to 2022 but no longer control outcomes.

Legal Authority

• U.S. Const. amend. XIV, § 1 — "nor shall any State deprive any person of life, liberty, or property, without due process of law" — the Due Process Clause; Roe found the abortion right within "liberty"
• Griswold v. Connecticut, 381 U.S. 479 (1965) — Right to contraception recognized as within a constitutional "zone of privacy"; provided the doctrinal foundation on which Roe built; Justice Douglas's opinion found privacy in "penumbras" of the Bill of Rights (see Griswold v. Connecticut)
• Eisenstadt v. Baird, 405 U.S. 438 (1972) — Extended Griswold's contraception right to unmarried individuals; "If the right of privacy means anything, it is the right of the individual, married or single, to be free from unwarranted governmental intrusion into matters so fundamentally affecting a person as the decision whether to bear or beget a child"
• Roe v. Wade, 410 U.S. 113 (1973) — Constitutional right to abortion derived from the Fourteenth Amendment's due process liberty; trimester framework dividing permissible state regulation; overruled by Dobbs (2022)
• Planned Parenthood of Southeastern Pennsylvania v. Casey, 505 U.S. 833 (1992) — Reaffirmed Roe's "essential holding" but replaced trimester framework with undue burden test; spousal notification requirement struck down; 24-hour waiting period upheld; overruled by Dobbs (2022)
• Stenberg v. Carhart, 530 U.S. 914 (2000) — Nebraska's ban on partial-birth abortion unconstitutional because it lacked a health exception; applied Casey's undue burden standard; effectively superseded by Dobbs
• Gonzales v. Carhart, 550 U.S. 124 (2007) — Federal Partial-Birth Abortion Ban Act upheld; no health exception required when Congress made findings about medical necessity; last significant abortion case before Dobbs
• Dobbs v. Jackson Women's Health Organization, 597 U.S. 215 (2022) — Roe and Casey overruled; the Constitution does not confer a right to abortion; abortion regulation returned to the states; rational basis review applies; see Dobbs v. Jackson Women's Health Organization for current law

How It Works

The Facts and the Road to Roe

Roe v. Wade was a challenge to Texas's 1857 abortion law, which made abortion a crime except when necessary to save the mother's life. Norma McCorvey, using the pseudonym "Jane Roe," filed suit challenging the Texas law after becoming pregnant and being unable to obtain an abortion in Texas. Henry Wade was the Dallas County district attorney who enforced the law.

The case reached the Supreme Court after the district court declared the Texas law unconstitutional but declined to issue an injunction. The Supreme Court heard argument twice (in 1971 and 1972) before issuing its opinion in January 1973.

By the time Roe was decided, the legal landscape was shifting. By 1970, four states — New York, Alaska, Hawaii, and Washington — had repealed their abortion laws entirely. Fourteen more states had adopted therapeutic exceptions. The Model Penal Code had proposed liberalized abortion standards in 1962. The case arrived at a moment when the legislative momentum for abortion liberalization was substantial, though most states still had restrictive laws.

Justice Blackmun's Framework: Privacy and the Trimester System

Justice Blackmun's majority opinion grounded the abortion right in the constitutional right to privacy first recognized in Griswold v. Connecticut (1965). Privacy, as a dimension of the liberty protected by the Fourteenth Amendment's Due Process Clause, encompassed "a woman's decision whether or not to terminate her pregnancy." This was a fundamental right; states could restrict it only if they had a compelling interest and their means were narrowly tailored.

The opinion then created the trimester framework as a way of calibrating state regulatory authority to the progression of pregnancy:

First trimester: The state's interest in protecting maternal health does not outweigh the woman's right to choose; the abortion decision is solely between the woman and her physician; states may not regulate abortion during the first trimester.

Second trimester: The state's interest in protecting maternal health becomes compelling because second-trimester abortions carry greater medical risk; states may regulate abortion to protect maternal health (requiring particular procedures, settings, or medical supervision), but may not prohibit it.

Third trimester (post-viability): The state's interest in potential life becomes compelling once the fetus is viable (capable of meaningful life outside the womb); states may prohibit abortion after viability, but must include exceptions for the life and health of the mother.

The viability line — approximately 24-28 weeks at the time — became the crucial constitutional marker. Before viability, the state's interest in potential life was insufficient to override the woman's fundamental right. After viability, the state could prohibit abortion entirely, subject to the health exception.

Casey: The Undue Burden Standard

Planned Parenthood of Southeastern Pennsylvania v. Casey (1992) is almost as important as Roe itself. A plurality of the Court (Justices O'Connor, Kennedy, and Souter) reaffirmed what they called Roe's "essential holding" — that women have a constitutional right to terminate a pregnancy before viability — but jettisoned the trimester framework and replaced it with the "undue burden" standard.

Under Casey's undue burden test, a state regulation of abortion is unconstitutional if it "has the purpose or effect of placing a substantial obstacle in the path of a woman seeking an abortion of a nonviable fetus." The state may regulate abortion to express its interest in potential life and to promote informed decision-making, as long as the regulation does not create a substantial obstacle. This was a significant relaxation of Roe's strict scrutiny framework: states could regulate abortion more extensively before viability, as long as they did not impose an undue burden.

Casey applied the undue burden test to Pennsylvania's abortion regulations: a 24-hour waiting period and informed consent requirement did not impose an undue burden (upheld); a spousal notification requirement did impose an undue burden (struck down); parental consent with judicial bypass did not impose an undue burden (upheld).

The joint plurality opinion in Casey also addressed stare decisis — the principle that courts should follow precedent — extensively, arguing that Roe should be reaffirmed because (1) the facts underlying Roe had not changed; (2) the rule had not proven unworkable; (3) reliance interests had developed; and (4) overruling would appear to be capitulation to political pressure. This reasoning was later directly rebutted in Dobbs.

Dobbs: Roe Overruled

Dobbs v. Jackson Women's Health Organization (2022) overruled both Roe and Casey. The case involved Mississippi's Gestational Age Act, which banned most abortions after 15 weeks. The Act squarely conflicted with Casey's viability line (approximately 24 weeks). Mississippi asked the Court to uphold the ban and overrule Roe.

Justice Alito's majority held that Roe was "egregiously wrong from the start." The Constitution's text does not mention abortion; the right to abortion is not "deeply rooted in this Nation's history and tradition" (the standard for recognizing unenumerated fundamental rights under Washington v. Glucksberg); and abortion is not necessary to an "ordered scheme of liberty." The majority applied rational basis review — the most deferential constitutional standard — to Mississippi's abortion ban and found it easily satisfied.

The majority addressed Casey's stare decisis analysis and rejected it: Roe was not merely wrong but "exceptionally" wrong because it lacked doctrinal foundation, created an unworkable rule (the trimester/viability framework), and had never achieved societal consensus that would make reliance on the doctrine appropriate.

Dobbs is the current law. See Dobbs v. Jackson Women's Health Organization for the governing constitutional framework on abortion in 2026.

What Roe Got Right and Wrong: The Scholarly Debate

Roe generated immediate and sustained scholarly controversy that spanned the ideological spectrum. Even scholars who supported abortion access often criticized Roe's legal reasoning. Harvard constitutional scholar Laurence Tribe argued that Roe should have been decided on equal protection grounds — that abortion restrictions constitute sex discrimination — rather than privacy grounds. Yale's John Hart Ely, a liberal critic, called Roe "not constitutional law and gives almost no sense of an obligation to try to be." The privacy rationale, critics argued, was circular: why is abortion in the zone of privacy? Because it is personal, intimate, and profound — but so are many decisions states routinely regulate.

Defenders of Roe's reasoning argued that the liberty clause of the Fourteenth Amendment, properly understood, encompasses decisions about whether to bear children as fundamental to personal autonomy and dignity. Justice Ginsburg's preferred alternative rationale — equal protection — would have required identifying abortion as a form of sex discrimination. The majority chose privacy and substantive due process.

The scholarly criticism of Roe was not purely from the right — it was a central example in debates about whether the Warren and Burger Courts' activist jurisprudence was constitutional or legislative in character. Whatever one thinks of the outcome of Roe (whether women should have a right to abortion), the legal reasoning generated genuine criticism from lawyers across the political spectrum.

How It Affects You

If you are a woman seeking abortion care in 2026: Roe and Casey are no longer the law. Your access to abortion depends on the law of the state where you are located or can travel to. As of 2026, approximately 13 states have near-total abortion bans that took effect after Dobbs; others have gestational limits; and several states have enacted affirmative statutory protections for abortion access. Federal constitutional challenges to state abortion bans must now rely on other constitutional grounds — travel rights, equal protection — rather than Roe's due process framework. See Dobbs v. Jackson Women's Health Organization for the current legal landscape.

If you are a healthcare provider: Roe and its successor cases no longer determine your legal obligations. Your obligations are defined by state law in the state where you practice. States with abortion bans impose criminal and civil liability on providers. Several states have enacted "shield laws" protecting providers who perform legal abortions in their states from suits or extradition requests from states that prohibit the procedure. The legal landscape for providers in 2026 is complex and rapidly evolving; consult healthcare counsel familiar with the current law in your jurisdiction.

If you are a constitutional law student or scholar: Roe is essential to understand for its doctrinal history and the debates it generated, even though it is no longer governing law. Roe's privacy rationale was the dominant framework for unenumerated fundamental rights from 1973 to 2022. Understanding the doctrinal arc from Griswold (1965) to Roe (1973) to Casey (1992) to Dobbs (2022) is essential to understanding the evolution of substantive due process. The debate over which unenumerated rights the Constitution protects — Dobbs's history-and-tradition test vs. Casey's liberty-and-dignity approach — is central to contemporary constitutional theory.

If you are a state legislator: Post-Dobbs, you have constitutional authority to regulate or prohibit abortion as the majority of your state's constituents prefer. The Supreme Court has held that rational basis review applies — any reasonably conceivable basis supports the regulation. But state abortion laws remain subject to state constitutional challenge (some state constitutions protect reproductive rights), federal statutory constraints (EMTALA requires emergency abortion care in hospitals that receive Medicare), and political accountability. Several states have approved ballot initiatives establishing state constitutional rights to abortion post-Dobbs.

State Variations

Roe applied as federal constitutional law to all states. After Dobbs returned abortion regulation to the states, the variation is dramatic:

Abortion ban states: By 2026, approximately 13 states have laws effectively banning abortion from the moment of fertilization or with very limited exceptions (rape, incest, life of the mother). These include Texas, Mississippi, Alabama, Arkansas, Missouri, and others. Some enacted "trigger laws" that took effect upon Dobbs; others had pre-Roe statutes that revived.

Gestational limit states: Several states have enacted 6-week, 12-week, or 15-week gestational limits with varying exceptions. The specific limit and exceptions vary significantly by state.

Protective states: Several states — including California, New York, Illinois, and others — have enacted statutory or constitutional protections for abortion access that exceed what Roe required. Some have amended their state constitutions to include affirmative abortion rights.

Shield law states: States that protect abortion access have enacted "shield laws" protecting their providers and residents from out-of-state legal action for abortions that are legal in the shield state — a direct response to states that attempt to restrict their residents from obtaining abortions elsewhere.

State constitutional rights: Post-Dobbs, voters in several states have approved constitutional amendments establishing state constitutional rights to abortion. These state constitutional rights are independent of federal constitutional law and cannot be overruled by Dobbs.

Pending Legislation

• Life at Conception Act and similar federal abortion bans: Federal legislation proposing to ban abortion nationwide has been introduced; would face constitutional and political obstacles.
• Women's Health Protection Act: Federal legislation to codify abortion rights similar to Roe has been introduced repeatedly; passed the House in 2022 but did not advance in the Senate.
• FMLA and related legislation: Proposals to ensure access to abortion-related leave under the Family and Medical Leave Act.

Recent Developments

• 2022 — Dobbs v. Jackson Women's Health Organization: Roe and Casey overruled; the constitutional right to abortion established by Roe in 1973 was eliminated; the most significant change to American constitutional law in a generation.
• 2022–2024 — State constitutional developments: Voters in Michigan, California, Vermont, Ohio, and other states approved ballot initiatives establishing state constitutional rights to abortion; voters in Kentucky and Kansas rejected proposals to eliminate state constitutional protections.
• 2023 — EMTALA and emergency abortion care: The Biden administration argued that the Emergency Medical Treatment and Labor Act (EMTALA) requires hospitals to provide abortion care in emergencies even in states with abortion bans; Moyle v. United States (2024) sent this issue back to lower courts without definitive resolution.
• 2024–2026 — Interstate travel and equal protection challenges: Courts are considering challenges to state laws that attempt to penalize residents for traveling to other states to obtain abortions; the constitutional basis for these challenges — including Article IV Privileges and Immunities and the right to interstate travel — is actively developing.