Ruth Bader Ginsburg shaped women’s rights law by building, case by case, the constitutional rule that government cannot sort people by sex based on stereotypes about who earns, who raises children, or who belongs where. As co-founder of the ACLU Women’s Rights Project in the early 1970s, she argued six gender discrimination cases before the Supreme Court and won five. Decades later, from the bench, she wrote the opinions and dissents that extended and defended that framework. The through-line is a single legal idea: sex classifications by government demand real justification, not tradition.
The Constitutional Standard She Moved the Court Toward
Her tool was the Equal Protection Clause of the Fourteenth Amendment, which prohibits any state from denying a person “the equal protection of the laws.”1Constitution Annotated. Fourteenth Amendment – Equal Protection and Other Rights For most of American history, courts reviewed sex-based laws under rational basis review, a lenient standard that let almost any justification carry the day. Tradition worked. Administrative convenience worked. Challenged laws survived.
Ginsburg pushed the Court to demand more, and the turning point came in Craig v. Boren (1976). The ACLU’s amicus brief, which she filed, argued that sex classifications deserved heightened review. The Court agreed, holding that a gender-based law must further an “important governmental objective” through means “substantially related” to achieving it.2Justia. Craig v. Boren, 429 U.S. 190 (1976) That test, known as intermediate scrutiny, is still the baseline for sex discrimination claims today.
The shift changed what governments had to prove. Laws built on assumptions about breadwinners and dependents, or about who belonged in the home and who belonged at work, no longer had an easy path through the courts.
The 1970s Cases and the Male-Plaintiff Strategy
Ginsburg’s courtroom approach had a signature move: she often represented men. Showing an all-male Supreme Court that gender stereotypes hurt husbands, widowers, and fathers made it harder to dismiss the cases as complaints about chivalry.
The campaign opened with Reed v. Reed (1971). An Idaho probate law automatically preferred men over equally qualified women for appointment as estate administrators. The Court unanimously struck it down as a violation of the Equal Protection Clause, the first time it had ever invalidated a law for discriminating on the basis of sex.3Justia U.S. Supreme Court Center. Reed v. Reed, 404 U.S. 71 (1971) Administrative convenience, the state’s rationale, was not enough.
Two years later came Frontiero v. Richardson (1973). Federal law gave male service members automatic housing and medical benefits for their wives but required female service members to prove their husbands were financially dependent. Lieutenant Sharron Frontiero applied for benefits for her husband and was denied. The Court struck down the double standard. Justice Brennan’s plurality opinion, drawing on Ginsburg’s arguments, delivered a line still quoted: discrimination had historically been rationalized by “romantic paternalism” that “in practical effect, put women not on a pedestal, but in a cage.”4Justia U.S. Supreme Court Center. Frontiero v. Richardson, 411 U.S. 677 (1973)
Rewriting Social Security Law
Some of her most consequential wins involved federal benefits, where the statutes were saturated with assumptions about which parent earned and which stayed home. In Weinberger v. Wiesenfeld (1975), she represented Stephen Wiesenfeld, whose wife died in childbirth. A surviving widow in his position would have received Social Security benefits based on her deceased husband’s earnings. A widower received nothing for himself; only the children got benefits. Wiesenfeld wanted to stay home with his newborn son and could not afford to.
The Court unanimously ruled the gender distinction unconstitutional under the Fifth Amendment’s Due Process Clause, holding that it gave female wage earners less protection for their survivors than male wage earners received.5Justia. Weinberger v. Wiesenfeld, 420 U.S. 636 (1975)
Califano v. Goldfarb (1977) hit the same assumption from another angle. Widows automatically received survivor benefits based on their deceased husbands’ earnings; widowers had to prove they had received at least half their support from their deceased wives. The Court struck down the dependency test as a “constitutionally forbidden” distinction built on “archaic and overbroad” generalizations rather than any legitimate administrative need.6Justia. Califano v. Goldfarb, 430 U.S. 199 (1977) Together, the two cases dismantled the presumption baked into federal law that husbands earn and wives depend.
Opening a Public Military College to Women
By 1993, Ginsburg had moved from arguing cases to deciding them. Her most significant majority opinion on gender came in United States v. Virginia (1996), the case that ended Virginia Military Institute’s all-male admissions policy. VMI had excluded women for more than 150 years. The state argued that women could not handle the school’s adversative training method and that admitting them would fundamentally alter the institution.
Writing for a 7–1 majority, Ginsburg rejected both arguments. Anyone defending a sex-based government action, she held, must show an “exceedingly persuasive justification” for it, and that justification “must not rely on overly broad generalizations about the different talents, capacities, or preferences of males and females.”7Justia. United States v. Virginia, 518 U.S. 515 (1996) Virginia’s separate leadership program for women at a different college was nowhere near equal in resources, prestige, or alumni networks.
Scholars have debated whether the “exceedingly persuasive justification” language raised the bar above traditional intermediate scrutiny, though the Court did not formally adopt strict scrutiny for sex. The practical rule was clear: publicly funded institutions could not exclude women based on generalizations about what women could handle. People had to be judged on their own abilities, not their membership in a group.
Reproductive Rights as an Equality Question
Ginsburg diverged from mainstream liberal thinking on one point that reveals how tightly she connected bodily autonomy to the broader equality framework. She believed Roe v. Wade would have rested on stronger ground had the Court framed abortion as an equal protection matter rather than a privacy one. At her 1993 confirmation hearing, she put it plainly: “It is essential to woman’s equality with man that she be the decisionmaker, that her choice be controlling. If you impose restraints that impede her choice, you are disadvantaging her because of her sex.”
Before Roe, she had been preparing a case built on exactly that theory. Captain Susan Struck, an Air Force nurse, became pregnant and was told to have an abortion or face discharge. Struck wanted to keep her baby and her job. Ginsburg’s brief argued that forcing a woman to choose between pregnancy and employment was sex discrimination, since no comparable medical condition triggered automatic discharge for male service members. The Air Force, anticipating a loss, granted Struck a waiver. The case became moot, and the chance to ground reproductive rights in equality law slipped away.
The principle nevertheless made its way into statute. The Pregnancy Discrimination Act of 1978 amended Title VII to make clear that discrimination “because of sex” includes discrimination based on “pregnancy, childbirth, or related medical conditions,” and that pregnant workers must be treated the same as other employees similar in their ability to work.8Office of the Law Revision Counsel. 42 USC 2000e – Definitions The Pregnant Workers Fairness Act, effective June 2023, requires employers with 15 or more workers to provide reasonable accommodations for pregnancy-related limitations unless doing so would cause undue hardship.9U.S. Equal Employment Opportunity Commission. What You Should Know About the Pregnant Workers Fairness Act
The Ledbetter Dissent That Became a Statute
Ginsburg’s influence was not limited to majorities. Her dissent in Ledbetter v. Goodyear Tire & Rubber Co. (2007) changed federal law. Lilly Ledbetter had worked as a Goodyear supervisor for nearly two decades before learning she was being paid significantly less than male colleagues in the same role.10Justia U.S. Supreme Court Center. Ledbetter v. Goodyear Tire and Rubber Co., 550 U.S. 618 (2007) She filed a charge under Title VII of the Civil Rights Act of 1964, which generally requires filing within 180 days of the discriminatory act.11U.S. Equal Employment Opportunity Commission. Time Limits For Filing A Charge
A five-justice majority ruled the clock had started when the original pay decision was made, not when Ledbetter discovered the gap or received a smaller check. Because those decisions had happened years earlier, her claim was time-barred. The interpretation ignored the reality that pay is usually secret and disparities compound quietly.
Ginsburg read her dissent from the bench, a rare gesture reserved for cases where a justice thinks the majority has gone seriously wrong. Each paycheck reflecting a discriminatory wage, she argued, was itself a new violation. She called on Congress to fix the ruling. It did. The Lilly Ledbetter Fair Pay Act of 2009 clarified that the filing period resets each time an employee receives compensation resulting from a discriminatory pay decision.12U.S. Equal Employment Opportunity Commission. Lilly Ledbetter Fair Pay Act of 2009 Workers no longer lose the right to challenge pay discrimination because the initial decision happened long ago.
A Framework That Kept Working
Ginsburg continued applying the framework she had built until her death in 2020. In Sessions v. Morales-Santana (2017), she wrote the majority striking down a federal citizenship law that imposed different physical-presence requirements on unwed American mothers and fathers seeking to pass citizenship to children born abroad. The gender line Congress had drawn, she wrote, was “incompatible with the Fifth Amendment’s requirement that the Government accord to all persons ‘the equal protection of the laws.'”13Justia. Sessions v. Morales-Santana, 582 U.S. ___ (2017) Four decades after the 1970s litigation campaign, the same principles were still doing work.
What made her approach distinctive was not only what she won but how. She understood that judges steeped in traditional gender roles would not respond to arguments framed as women’s liberation, so she showed them widowers denied benefits, husbands excluded from caretaking, and servicewomen forced to clear hurdles their male counterparts never faced. By the time the Court recognized the pattern, the legal foundation was already in place. Government cannot sort people by sex based on assumptions about who earns, who raises children, or who can endure a difficult education. That rule, forged case by case, remains the backbone of gender equality law in the United States.