10.3 Equal Protection: Classifications, Scrutiny & Fundamental Rights

10.3 Equal Protection: Classifications, Scrutiny & Fundamental Rights

Equal protection analysis has three steps: identify the classification, determine the level of scrutiny, and apply that test. MBE answer choices often misstate the standard (for example, applying strict scrutiny to age discrimination) or the burden of proof, so learn the tiers precisely.

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Constitutional Foundations: Fourteenth & Fifth Amendments

• The Fourteenth Amendment (§ 1): Provides that no state shall "deny to any person within its jurisdiction the equal protection of the laws." This clause directly binds state and local governments.
• The Fifth Amendment Due Process Clause (Reverse Incorporation): The text of the Fifth Amendment contains no explicit equal protection clause. However, in Bolling v. Sharpe (1954), the Supreme Court held that the Due Process Clause of the Fifth Amendment embodies an implicit equal protection guarantee that prohibits the federal government from engaging in unconstitutional discrimination. The substantive standards of equal protection review applied to federal action under the Fifth Amendment are identical to those applied to state action under the Fourteenth Amendment.

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Proving Intentional Discrimination: The Washington v. Davis Rule

On the MBE, a fundamental threshold principle is that discriminatory impact or disparate effect alone is legally insufficient to trigger strict or intermediate scrutiny under the Equal Protection Clause (Washington v. Davis).

               ┌───────────────────────────────────────────────────────────┐
               │ Does the statute or government action intentionally      │
               │ discriminate against a suspect or quasi-suspect class?    │
               └─────────────────────────────┬─────────────────────────────┘
                                             │
                                NO           │           YES
                                ▼            │            ▼
                    ┌─────────────────────┐  │  ┌───────────────────────┐
                    │ Rational Basis      │  │  │ Strict / Intermediate │
                    │ Review Applies      │  │  │ Scrutiny Applies      │
                    │ (Disparate impact   │  │  │ (Facial, Application, │
                    │  alone is enough    │  │  │  or Motive established)│
                    │  only under statutes│  │  └───────────────────────┘
                    │  like Title VII)    │  │
                    └─────────────────────┘  │

To establish that a facially neutral law violates equal protection by discriminating against a suspect or quasi-suspect class, the plaintiff must affirmatively prove discriminatory intent or purpose. Discriminatory intent may be established through any of three distinct evidentiary avenues:

1. Facial Discrimination: The law explicitly creates a classification on its face (e.g., a statute barring women from practicing law, or a statute prohibiting racial minorities from serving on juries; Strauder v. West Virginia, Loving v. Virginia).
2. Discriminatory Application: A law that appears completely neutral on its face is administered or enforced in an intentionally discriminatory manner (e.g., Yick Wo v. Hopkins, where a municipal ordinance required a permit to operate a wooden laundry, and the city granted permits to all non-Chinese applicants but denied permits to over 200 Chinese applicants).
3. Discriminatory Purpose / Legislative Motive: A facially neutral law that produces a racially disparate impact was enacted with an intentional discriminatory purpose as a motivating factor (Village of Arlington Heights v. Metropolitan Housing Development Corp.). Courts evaluate the historical background of the decision, the sequence of events leading up to the enactment, departures from normal procedural sequences, and legislative history (Hunter v. Underwood).

MBE Tip: Distinguish constitutional equal protection claims from statutory claims under Title VII of the Civil Rights Act of 1964. Under Title VII, a plaintiff can establish a prima facie case of employment discrimination based solely on disparate impact without proving discriminatory intent. Under the U.S. Constitution, disparate impact alone never triggers strict scrutiny.

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Tier 1: Strict Scrutiny & Suspect Classifications

The Strict Scrutiny Standard

When a governmental classification burdens a suspect class or infringes upon a fundamental right, the court applies Strict Scrutiny:

• Burden of Proof: Rests entirely on the Government.
• Standard: The government must affirmatively demonstrate that the classification is necessary (narrowly tailored, using the least restrictive alternative) to achieve a compelling, overriding governmental interest.
• Outcome: The law is presumed invalid and is almost always struck down.

Suspect Classifications

There are three suspect classifications recognized under the Constitution:

1. Race
2. National Origin
3. Alienage (when imposed by state or local governments, subject to major exceptions)

Race and National Origin

All governmental classifications based on race or national origin—regardless of whether they burden a minority group or are intended to benefit a historically disadvantaged group—are evaluated under strict scrutiny (Adarand Constructors, Inc. v. Peña).

Affirmative Action Doctrine

• Remedying Past Specific Discrimination: Remedying the lingering effects of past, specific, identified discrimination by the specific governmental unit involved is a compelling government interest (City of Richmond v. J.A. Croson Co.). The remedy must be narrowly tailored to address that specific past wrongdoing.
• Societal Discrimination Insufficient: Remedying generalized, historical societal discrimination does not constitute a compelling interest and cannot justify racial classifications.
• Higher Education Admissions: In Students for Fair Admissions, Inc. v. Harvard (2023), the Supreme Court held that race-conscious university admissions programs violate the Equal Protection Clause. The Court ruled that student body diversity, while commendable, lacks sufficiently measurable and objective standards to withstand strict scrutiny, inevitably uses race as a negative factor and stereotype, and lacks a meaningful logical end point. Universities may, however, consider an applicant's individual essay discussion of how race influenced their life and personal character.

Alienage Classifications (Non-Citizens)

The level of judicial scrutiny applied to alienage classifications depends strictly on which sovereign created the classification and the nature of the government role.

1. State and Local Alienage Classifications → Strict Scrutiny (General Rule)

Under Graham v. Richardson (1971), state laws discriminating against lawful permanent residents (non-citizens) are suspect and subject to strict scrutiny:

• Struck down under strict scrutiny: denying state welfare benefits to non-citizens (Graham); excluding non-citizens from civil service employment (Sugarman v. Dougall); barring non-citizens from the practice of law (In re Griffiths); denying state tuition assistance (Nyquist).

2. The Political Function Exception → Rational Basis Review

States may exclude non-citizens from governmental positions that are intimately tied to the formulation, execution, or review of broad public policy or that involve the exercise of coercive sovereign police power (the "democratic self-governance" exception). When this exception applies, the court applies Rational Basis Review:

• Upheld Under Rational Basis:
  • Police officers and state highway troopers (Foley v. Connelie);
  • Public elementary and secondary school teachers (Ambach v. Norwick - teachers instill civic and democratic values);
  • Probation officers (Cabell v. Chavez-Salido);
  • Grand jurors and petit jurors.
• Struck Down (Non-Political Roles):
  • Notary publics (Bernal v. Fainter - performing purely ministerial clerical tasks does not involve policy formation or sovereign discretion; strict scrutiny applies).

3. Federal Alienage Classifications → Rational Basis Review

Because the Constitution confers plenary authority over naturalization and immigration on Congress (Art. I, § 8, cl. 4) and the Executive, federal statutes and executive orders drawing alienage distinctions are evaluated under Rational Basis Review (Mathews v. Diaz). Congress may condition federal medical benefits or employment on citizenship.

4. Undocumented Immigrant Children (Plyler v. Doe)

Undocumented non-citizens are not a suspect class. However, in Plyler v. Doe (1982), the Supreme Court struck down a state statute denying free public elementary and secondary education to undocumented immigrant children. The Court held that penalizing innocent children for their parents' unauthorized presence did not rationally advance any substantial state interest (a form of heightened rational basis review).

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Tier 2: Intermediate Scrutiny & Quasi-Suspect Classifications

The Intermediate Scrutiny Standard

When a government classification targets a quasi-suspect class, courts apply Intermediate Scrutiny:

• Burden of Proof: Rests on the Government.
• Standard: The government must prove that the classification is substantially related to an important governmental interest.
• Exceedingly Persuasive Justification: In gender cases, the state must establish an "exceedingly persuasive justification" that is genuine, not hypothesized post hoc, and not dependent on overbroad generalizations (United States v. Virginia - VMI).

Quasi-Suspect Classifications

1. Gender / Sex
2. Non-Marital Children (Legitimacy)

Gender Classifications

• Stereotypes and Archaic Generalizations: Gender classifications that rely on traditional, paternalistic assumptions regarding the proper roles of men and women violate equal protection:
  • Invalidated: Providing survivor benefits automatically to widows but requiring widowers to prove financial dependency (Frontiero v. Richardson); setting different legal drinking ages for men (21) and women (18) (Craig v. Boren); awarding alimony to women only (Orr v. Orr); excluding women from a state-supported military college (United States v. Virginia).
• Permissible Gender Classifications:
  • Remedying Past Economic Discrimination: State or federal programs that provide preferential social security benefit formulas or promotional opportunities to women to compensate for documented past wage and promotional disparities (Califano v. Webster).
  • Biological Differences: Statutory rape laws punishing only males upheld because women face the inherent biological deterrent of pregnancy (Michael M. v. Superior Court); male-only military draft registration upheld because combat restrictions at the time meant men and women were not similarly situated for mobilization (Rostker v. Goldberg).

Non-Marital Children (Legitimacy)

Classifications based on whether a child was born to married or unmarried parents are quasi-suspect and trigger intermediate scrutiny (Clark v. Jeter):

• Invalidated: Laws that completely disinherit non-marital children from their intestate fathers' estates (Trimble v. Gordon); laws denying non-marital children the right to recover for the wrongful death of their parents (Levy v. Louisiana); unreasonably short statutes of limitations for non-marital children to establish paternity (e.g., 6-year statute struck down in Clark v. Jeter).
• Upheld: Statutes requiring non-marital children to establish paternity through judicial decree during the father's lifetime before claiming intestate inheritance, because the requirement is substantially related to the important state interest in orderly estate administration (Lalli v. Lalli).

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Tier 3: Rational Basis Review: Non-Suspect Classifications

The Rational Basis Standard

Rational basis review is the default standard for all classifications that do not burden a suspect class, quasi-suspect class, or fundamental right:

• Burden of Proof: Rests entirely on the Challenger.
• Standard: The challenger must prove that the classification is not rationally related to any conceivable legitimate governmental interest.
• Judicial Deference: Extremely deferential. The government is under no obligation to present actual empirical evidence; any plausible or hypothetical public health, safety, or welfare justification conceived by the court suffices (FCC v. Beach Communications). Under-inclusiveness or over-inclusiveness is tolerated (Railway Express Agency v. New York).

Common Classifications Subject to Rational Basis

• Age: Mandatory retirement laws for state police officers (Massachusetts Board of Retirement v. Murgia) or judges (Gregory v. Ashcroft) easily survive rational basis review.
• Disability: Discrimination based on physical or mental disability is evaluated under rational basis (City of Cleburne v. Cleburne Living Center; Board of Trustees of Univ. of Alabama v. Garrett).
• Wealth and Poverty: Wealth is not a suspect class. State systems funding public schools through local property taxes that generate substantial funding disparities between wealthy and poor districts are constitutional under rational basis (San Antonio Independent School District v. Rodriguez).
• Economic and Business Regulations: Commercial regulations, tax classifications, licensing distinctions (e.g., opticians vs. optometrists in Williamson v. Lee Optical).
• Sexual Orientation: While the Supreme Court has invalidated laws discriminating on the basis of sexual orientation, it has done so using rational basis review infused with scrutiny against animus (Romer v. Evans, United States v. Windsor).

Rational Basis With "Bite" (Governmental Animus)

Under rational basis review, a law will be struck down if the classification is motivated solely by a bare desire to harm a politically unpopular group, moral disapproval, or unvarnished animus, because animus is never a legitimate governmental interest:

• Bare Animus Against Non-Traditional Households: Denying food stamps to households containing unrelated individuals (U.S. Dept. of Agriculture v. Moreno);
• Zoning Animus Against Individuals with Intellectual Disabilities: Denying a special-use permit for a group home for individuals with intellectual disabilities based on neighborhood prejudice (City of Cleburne);
• Animus Against LGBTQ+ Individuals: Amending a state constitution to prohibit any state or local legislative protections for gay and lesbian individuals (Romer v. Evans).

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Recent Classification Decisions

• Purpose means "because of": Discriminatory purpose requires that the decisionmaker selected a course of action at least in part because of, not merely in spite of, its adverse effects on a group (Personnel Administrator of Massachusetts v. Feeney, 1979, upholding a veterans' hiring preference that overwhelmingly favored men).
• Medical treatments for minors: In United States v. Skrmetti (2025), the Court upheld under rational basis review a Tennessee law prohibiting certain medical treatments for transgender minors, reasoning that the law classified based on age and medical use rather than sex, and did not classify based on transgender status.
• Sex-separated athletics: In West Virginia v. B.P.J. and Little v. Hecox (2026), the Court held that neither the Equal Protection Clause nor Title IX prevents states from maintaining girls' and women's sports teams separated by sex in the challenged manner.
• Racial gerrymandering: When race is the predominant factor in drawing district lines, the plan must satisfy strict scrutiny (Shaw v. Reno, 1993; Miller v. Johnson, 1995). Courts presume legislative good faith, and challengers must disentangle race from politics when the two are closely correlated (Alexander v. South Carolina State Conference of the NAACP, 2024). In Louisiana v. Callais (2026), the Court held that Section 2 of the Voting Rights Act did not require Louisiana to create an additional majority-minority congressional district and that the map drawn to create one was an unconstitutional racial gerrymander.
• Class of one: A single person may bring an equal protection claim alleging intentional, irrational differential treatment compared with others similarly situated (Village of Willowbrook v. Olech, 2000).

Fundamental Rights Under Equal Protection

When a law classifies people in a way that burdens a fundamental right, the Equal Protection Clause requires strict scrutiny even if the classification itself is not suspect.

Voting

• One person, one vote: State legislative districts must be substantially equal in population (Reynolds v. Sims, 1964); states may use total population to apportion districts (Evenwel v. Abbott, 2016).
• Wealth and property qualifications: Poll taxes are invalid (Harper v. Virginia State Board of Elections, 1966), and states may not limit general-purpose elections to property owners or parents (Kramer v. Union Free School District No. 15, 1969). Special-purpose districts that disproportionately affect landowners, such as water storage districts, may limit voting to landowners (Salyer Land Co. v. Tulare Lake Basin Water Storage District, 1973).
• Election administration: Ordinary, evenhanded election rules are judged by balancing the burden on voting against the state's interests. A photo-identification requirement was upheld (Crawford v. Marion County Election Board, 2008).
• Ballot access: Filing fees that bar indigent candidates without an alternative route onto the ballot are invalid (Bullock v. Carter, 1972; Lubin v. Panish, 1974).

Access to Courts

• Criminal appeals: A state that provides appeals must give indigent defendants trial transcripts (Griffin v. Illinois, 1956) and counsel on a first appeal as of right (Douglas v. California, 1963).
• Fundamental interests in civil cases: A state may not deny divorce to people who cannot pay filing fees (Boddie v. Connecticut, 1971) or deny an appeal of the termination of parental rights because a parent cannot pay record-preparation fees (M.L.B. v. S.L.J., 1996). Fees for bankruptcy (United States v. Kras, 1973) and welfare-benefit appeals (Ortwein v. Schwab, 1973) are valid.

Interstate Travel

Durational residency requirements for vital benefits and voting trigger strict scrutiny (Shapiro v. Thompson, 1969; Dunn v. Blumstein, 1972), and new residents have the right to be treated like other citizens of their new state (Saenz v. Roe, 1999; see Section 11.2).

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The Three Tiers of Scrutiny: Standard, Burden of Proof, and Applicable Classifications