Planned Parenthood v. Casey — Undue Burden Test and Stare Decisis

Planned Parenthood of Southeastern Pennsylvania v. Casey, 505 U.S. 833 (1992), is one of the most significant — and structurally unusual — Supreme Court decisions of the twentieth century. Written as a joint plurality opinion by three Republican-appointed justices (O'Connor, Kennedy, and Souter), Casey surprised those who expected the Court to overrule Roe v. Wade (1973): instead, the plurality reaffirmed what it called Roe's "essential holding" — that women have a constitutional right to terminate a pregnancy before viability — while replacing Roe's trimester framework with a more flexible "undue burden" standard. A regulation of abortion is unconstitutional, the plurality held, only 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." Applied to Pennsylvania's abortion regulations, the plurality upheld four of five provisions — striking only a spousal notification requirement as imposing an undue burden — because requiring a woman to notify her husband before obtaining an abortion could expose women in abusive marriages to serious harm. Casey governed abortion law in the United States for thirty years. It was overruled, along with Roe, by Dobbs v. Jackson Women's Health Organization in June 2022. But Casey's framework — both its undue burden test and its landmark analysis of when stare decisis requires the Court to follow (or permits it to overrule) precedent — left an enduring mark on constitutional law that outlasted the abortion right itself.

Current Law (2026)

Key Mechanics

Planned Parenthood v. Casey, 505 U.S. 833 (1992) restructured constitutional abortion law by retaining Roe v. Wade's "essential holding" while replacing its trimester framework with the undue burden test. A plurality of three justices (O'Connor, Kennedy, Souter) controlled the key doctrinal holding: the state may regulate abortion before viability but may not impose a regulation with the purpose or effect of placing a substantial obstacle in the path of a woman seeking a pre-viability abortion. Casey upheld four of Pennsylvania's five abortion regulations (24-hour waiting period, informed consent, parental consent for minors with judicial bypass) while striking one (spousal notification) as an undue burden. The decision grounded the abortion right in the Fourteenth Amendment's due process liberty interest — the right of the individual to make decisions about the most intimate aspects of life — rather than Roe's privacy framing. Casey was the controlling law on abortion regulation for 30 years until Dobbs v. Jackson Women's Health Organization (2022) overruled both Roe and Casey, holding there is no federal constitutional right to abortion and returning regulation to the states under rational basis review. Casey retains historical significance as the case that established the undue burden test and the framework that Dobbs rejected.

Legal Authority

• U.S. Const. amend. XIV, § 1 — Due Process Clause: "nor shall any State deprive any person of life, liberty, or property, without due process of law" — the provision from which Casey derived the abortion right, consistent with Roe
• U.S. Const. amend. XIV, § 1 — Equal Protection Clause: raised by dissenters and scholars as an alternative ground for the abortion right; not adopted as the majority basis in Casey or Roe
• Roe v. Wade, 410 U.S. 113 (1973) — Established the abortion right; Casey reaffirmed its "essential holding" but replaced the trimester framework; both overruled by Dobbs (2022)
• Washington v. Glucksberg, 521 U.S. 702 (1997) — Later case establishing the test for unenumerated rights under substantive due process; the test Dobbs (2022) applied to reject Casey's framework
• Dobbs v. Jackson Women's Health Organization, 597 U.S. 215 (2022) — Overruled Roe and Casey; held no federal constitutional right to abortion; abortion regulation returned to the states; applied rational basis review; see Dobbs
• Whole Woman's Health v. Hellerstedt, 579 U.S. 582 (2016) — Last major application of Casey's undue burden test before Dobbs; struck Texas's hospital admitting-privileges and ambulatory surgical center requirements as undue burdens
• 42 U.S.C. § 1983 — Civil rights action vehicle used to challenge abortion regulations as unconstitutional violations of the incorporated Fourteenth Amendment right

How It Works

Background: Pennsylvania's five abortion regulations. The challenge to Casey arose from Pennsylvania's Abortion Control Act of 1982, as amended in 1988 and 1989. The Act imposed five requirements on abortion providers and patients:

1. Informed consent: Before an abortion, the physician had to provide specific information — including the gestational age of the fetus, the availability of state-funded alternatives, and the nature of the procedure — and then wait at least 24 hours before performing the abortion.
2. Spousal notification: Married women had to sign a statement that they had notified their husbands of the planned abortion, unless specific exceptions applied (abuse, rape, pregnancy from another man, husband not locatable).
3. Parental consent: Minors needed the consent of one parent (or a judge's authorization through a "judicial bypass" procedure).
4. Reporting requirements: Abortion providers had to file detailed reports with the state, which were subject to public disclosure (except for certain patient information).
5. Definition of medical emergency: The Act provided for a narrow medical emergency exception that plaintiffs argued was too restrictive.

Planned Parenthood and several doctors and clinics challenged all five provisions as unconstitutional under Roe v. Wade. The district court struck all five. The Third Circuit largely reversed, upholding most of the provisions, reasoning that Roe's strict scrutiny standard had effectively been abandoned by the Supreme Court's later decisions.

The joint plurality: a constitutional surprise. The Supreme Court's consideration of Casey was shaped by the expectation — shared by both abortion rights advocates and opponents — that the Court would overrule Roe. The Reagan and Bush administrations had explicitly called for Roe's overruling. Five justices appointed by Republican presidents (Rehnquist, White, O'Connor, Scalia, Kennedy) were potential votes against Roe. Chief Justice Rehnquist had dissented in Roe and had written in 1989 (Webster v. Reproductive Health Services) in terms that many read as willing to overturn the decision.

The surprise of Casey was the joint opinion authored by Justices O'Connor, Kennedy, and Souter. Kennedy had been widely expected to vote to overrule Roe — there is historical evidence that a draft opinion circulated internally at one point would have done so, with Kennedy's vote. The joint plurality's decision to reaffirm Roe's essential holding was a deliberate and deeply considered choice by three moderate conservatives who concluded that the Court's legitimacy required it to stand by precedent absent overwhelming reasons to overrule.

The "essential holding" and the undue burden test. The joint plurality identified three elements of Roe's "essential holding" that it reaffirmed:

1. Before viability, a woman has the right to choose to terminate her pregnancy without undue interference from the state — this right includes freedom from a ban on abortion.
2. After viability, the state may restrict or prohibit abortion because the fetus is capable of meaningful life outside the mother's womb, but must provide exceptions for pregnancies endangering the woman's life or health.
3. The state has legitimate interests — from the outset of pregnancy — in protecting the health of the woman and the life of the fetus that may become a child.

But the plurality replaced Roe's trimester framework and strict scrutiny standard with the undue burden test: "A finding of an undue burden is a shorthand for the conclusion that a state regulation has the purpose or effect of placing a substantial obstacle in the path of a woman seeking an abortion of a nonviable fetus." A regulation that serves a valid state purpose but does not impose a substantial obstacle is permissible, even before viability. The state was no longer limited to regulating for maternal health in the second trimester — it could express its interest in potential life through regulations throughout pregnancy, as long as those regulations did not create a substantial obstacle.

Applying the test to Pennsylvania's provisions. The plurality analyzed each provision:

24-hour waiting period and informed consent — Upheld. The requirement that women receive information about alternatives and wait 24 hours before obtaining an abortion expressed the state's legitimate interest in ensuring the decision was informed and deliberate. The waiting period was inconvenient and might require some women to make two trips to a provider, but this burden was not a "substantial obstacle." The plurality rejected the district court's finding that the burden fell most heavily on women in rural areas or with transportation difficulties.

Spousal notification — Struck down. This was the most significant provision the Court invalidated. The plurality held that requiring women to notify their husbands before obtaining an abortion imposed an undue burden because of the reality of domestic violence: for women in abusive marriages — "a large fraction of the cases in which [the provision] is relevant" — the requirement could expose them to physical harm, economic coercion, and psychological abuse. The state's interest in promoting marital communication did not justify imposing this obstacle. The plurality notably rejected the argument that because most marriages are not abusive, the provision was valid for most women — it was sufficient that it imposed a substantial obstacle on a significant fraction of those to whom it applied.

Parental consent with judicial bypass — Upheld. The provision required one parent's consent or judicial authorization for a minor's abortion. The judicial bypass procedure — allowing a court to authorize the abortion without parental consent if the minor demonstrated either maturity or that the abortion was in her best interest — satisfied constitutional requirements established in prior cases (Bellotti v. Baird, 1979).

Reporting requirements — Upheld. Provider reporting requirements were permissible as long as they did not identify individual patients and served valid state interests in data collection and oversight.

The stare decisis analysis: a constitutional landmark in itself. Beyond the abortion holding, Casey's most enduring doctrinal contribution was its extended analysis of the conditions under which the Supreme Court should follow or overrule precedent. The plurality articulated a multi-factor framework:

• Whether the prior rule proved unworkable: Roe's core rule (states cannot ban pre-viability abortion) was workable, even if its trimester framework was not.
• Whether significant facts had changed since the prior decision: No material change in the underlying facts that justified Roe's holding.
• Whether reliance interests existed: Unlike commercial reliance on a contract or property rule, reliance on Roe was structural — "people have organized intimate relationships and made choices that define their views of themselves and their places in society, in reliance on the availability of abortion in the event that contraception should fail."
• Whether the rule is inextricably tied to other doctrine that would be undermined: Roe stood consistently with the Court's prior privacy and liberty cases (Griswold, Eisenstadt).
• Whether the principles of the rule proved sound: The core principle — that women have a liberty interest in reproductive choice — was sound, even if Roe's implementation was imperfect.

The plurality added a dimension beyond these conventional stare decisis factors: the Court's institutional legitimacy requires that it not overrule a major constitutional decision simply because the political composition of the Court has changed. When "a prior decision's error is supposed to yield to political pressure, so the cynical claim that the Court must overrule under fire in the face of sustained national controversy, and so yield to that pressure, [the Court] would subvert the Court's legitimacy." Casey's stare decisis section became the benchmark against which all subsequent stare decisis arguments were measured — including Dobbs's lengthy effort to rebut it before concluding that Roe and Casey were uniquely "egregiously wrong" decisions that warranted overruling.

The five separate opinions. Casey produced five opinions — a plurality, two concurrences, and two dissents — that together barely formed majorities on any given point:

Joint plurality (O'Connor, Kennedy, Souter): Reaffirmed Roe's essential holding; replaced trimester framework with undue burden; struck spousal notification; upheld other provisions.

Justice Stevens (concurrence in part): Would have struck more provisions as undue burdens, including elements of the 24-hour waiting period. Agreed with the essential holding but found the plurality's undue burden standard insufficiently protective.

Justice Blackmun (concurrence in part): Roe's author would have applied strict scrutiny to all abortion restrictions, not the undue burden test. Wrote separately to note he was in "twilight years" and that the future of Roe depended on the Court's composition.

Chief Justice Rehnquist (dissent, joined by White, Scalia, Thomas): Would have overruled Roe entirely. The abortion right was not protected by the Constitution; the state had a rational basis for all of Pennsylvania's provisions; the undue burden test was not tethered to constitutional text.

Justice Scalia (dissent, joined by Rehnquist, White, Thomas): More forceful critique than Rehnquist; argued the Constitution does not protect a right to abortion and the Court was engaged in raw judicial policy-making; would have upheld all five Pennsylvania provisions.

Legacy: thirty years under Casey, then Dobbs. Casey's undue burden test governed abortion law from 1992 to 2022. Key cases applying it include:

• Stenberg v. Carhart (2000): Nebraska's partial-birth abortion ban struck because it lacked a health exception — applied Casey
• Gonzales v. Carhart (2007): Federal Partial-Birth Abortion Ban Act upheld — applied Casey but read the health exception requirement more narrowly
• Whole Woman's Health v. Hellerstedt (2016): Texas's hospital admitting-privileges and ambulatory surgical center requirements struck as undue burdens — applied Casey and required courts to weigh benefits against burdens
• June Medical Services v. Russo (2020): Louisiana's admitting-privileges requirement struck under Whole Woman's Health

Dobbs v. Jackson Women's Health Organization (2022) overruled both Roe and Casey, holding that neither the text nor the history of the Constitution supported an abortion right. The current governing framework — no federal constitutional right to abortion, rational basis review — is described at Dobbs v. Jackson Women's Health Organization.

How It Affects You

If you are seeking to understand your current abortion rights: Casey is no longer the law. It was overruled by Dobbs in June 2022. Under Casey's historical framework (1992–2022), you had a federal constitutional right to terminate a pregnancy before viability (~22-24 weeks) that states could regulate but not eliminate. That right no longer exists as a matter of federal constitutional law. Your current rights depend entirely on the law of the state where you are located. As of 2026, roughly 21 states have near-total abortion bans or severe restrictions; approximately 14 states have affirmatively protected abortion access by statute or state constitutional provision. If you live in a state with a ban, travel to a state where abortion is legal remains a constitutional right (under the right to interstate travel), though some states have attempted to restrict this. For the current legal framework, see Dobbs v. Jackson Women's Health Organization.

If you are a constitutional law student or practitioner: Casey is essential doctrine even though it is overruled, for two reasons. First, its substantive framework (the undue burden test, the reaffirmation of Roe's essential holding, the analysis of each Pennsylvania provision) illustrates how courts apply a balancing test to reproductive rights and is directly analogous to how courts may analyze other liberty interests. Second, and more importantly, Casey's stare decisis analysis is a landmark in its own right — it articulated the factors courts apply when deciding whether to follow or overrule precedent, and those factors are applied across all areas of constitutional and common law. The Dobbs majority's lengthy engagement with Casey's stare decisis section — rebutting each factor and arguing Roe/Casey were uniquely "egregiously wrong" — shows how authoritative Casey's framework has become. For any case involving the question of whether to overrule precedent, Casey's stare decisis analysis (and Dobbs's response to it) are the starting point.

If you are a woman who experienced an abusive relationship or domestic violence: Casey's striking of Pennsylvania's spousal notification requirement on the ground that it imposed an undue burden on domestic violence victims is significant regardless of Casey's ultimate overruling — it reflects a judicial recognition that facially neutral regulations have disproportionate effects on women in coercive relationships. The principle that a law imposing a "substantial obstacle" on "a large fraction of the cases in which [it] is relevant" can be unconstitutional as applied continues to influence constitutional analysis outside the abortion context. For current resources on domestic violence and the law, see Federal Domestic Violence and Stalking Laws. Spousal notification requirements for other medical procedures vary widely by state.

If you are a healthcare provider or hospital administrator navigating post-Dobbs law: Casey's distinction between constitutionally permissible regulations (informed consent, waiting periods, parental consent with bypass) and impermissible ones (substantial obstacles) no longer defines the constitutional floor for state abortion regulation. States are now free to impose any abortion restriction that survives rational basis review — the most deferential constitutional standard. The practical concern is EMTALA: federal law requires hospitals receiving Medicare funds to provide stabilizing emergency treatment, which the Biden administration interpreted to include emergency abortions even in states with bans. The Trump administration rescinded that interpretation; litigation continues. See EMTALA — Emergency Medical Treatment for current emergency care obligations.

State Variations

Casey applied the federal constitutional floor equally to all states. When it was overruled, that floor was eliminated, producing maximal state-by-state variation:

States that codified Casey-equivalent protections: California, Colorado, Illinois, New York, Washington, Oregon, and others have enacted statutes or constitutional provisions protecting the right to abortion up to viability (and often beyond, for life and health). These states' protections now derive from state law rather than the federal Constitution overruled in Dobbs.

States that enacted gestational limits: Georgia, North Carolina, Nebraska, Iowa, Florida, and others enacted gestational limits (6, 12, or 15 weeks) that would have been unconstitutional under Casey's viability line but are permissible post-Dobbs.

States with near-total bans: Texas, Mississippi, Alabama, Arkansas, Kentucky, Louisiana, Missouri, Oklahoma, South Dakota, Tennessee, West Virginia, and others have enacted near-total prohibitions that were squarely prohibited under Casey and are now permissible under Dobbs.

State constitutional litigation: Several state supreme courts — including those of Montana, New Mexico, Alaska, Minnesota, New Jersey, and Colorado — have found broader abortion protections in state constitutional provisions (privacy, liberty, equality) than Casey provided under the federal Constitution. These state constitutional protections are not affected by Dobbs. Voters in Ohio (November 2023) and Missouri (November 2024) approved state constitutional amendments protecting abortion access, creating durable protections beyond legislative reach in those states.

Pending Legislation

No federal legislation directly codifies or restores Casey's undue burden framework, which as a constitutional rule could only be restored by the Supreme Court. Congressional action could create a statutory right to abortion under Congress's Commerce Clause authority:

• Women's Health Protection Act — Would create a federal statutory right to abortion services; failed in the Senate in 2022; reintroduced but not advanced. Would not rely on the constitutional framework Casey established.
• No federal legislation is pending that would reinstate Casey's constitutional framework — that would require either Supreme Court reversal of Dobbs or an Article V constitutional amendment.

Recent Developments

• 2022 — Dobbs v. Jackson Women's Health Organization (June 24, 2022): Overruled both Roe and Casey. The majority applied Washington v. Glucksberg's "deeply rooted in history and tradition" test, found no such historical rooting for the abortion right, and eliminated the federal constitutional protection that Casey had reaffirmed for 30 years. Justice Alito's majority addressed and rejected each element of Casey's stare decisis analysis. See Dobbs for the current governing framework.
• 2024 — FDA v. Alliance for Hippocratic Medicine (2024): Challengers lacked standing to challenge FDA's approval of mifepristone for medication abortion. FDA approval stands; medication abortion remains federally available, though states continue to enact restrictions on its use within their borders.
• 2023–2024 — State constitutional amendments: Ohio voters approved a state constitutional amendment protecting abortion rights (November 2023); Missouri voters approved one (November 2024), reversing the state's near-total ban. These developments reflect the Casey-era right being reconstituted through state democracy rather than federal courts.
• 2016 — Whole Woman's Health v. Hellerstedt (2016): Last major Supreme Court application of Casey's undue burden test. Texas's TRAP laws (hospital admitting privileges; ambulatory surgical center requirements) struck because the burdens imposed substantially outweighed any health benefits — refining Casey to require a genuine cost-benefit analysis, not just a rational basis. This refinement was itself a contested reading of Casey and was effectively foreclosed by Dobbs.
• 2020 — June Medical Services v. Russo (2020): Louisiana's admitting-privileges requirement — identical to the Texas law struck in Whole Woman's Health — also struck, 5-4. Chief Justice Roberts's controlling concurrence applied Whole Woman's Health on stare decisis grounds, though he had dissented in that case. The last abortion case decided under Casey before Dobbs made the framework moot.