Congressional Section 5 Power — Enforcing the Fourteenth Amendment

Section 5 of the Fourteenth Amendment grants Congress the power "to enforce, by appropriate legislation, the provisions of this article." This enforcement power is Congress's primary constitutional authority to protect civil rights against state action — and its scope has been one of the most contested questions in American constitutional law. For several decades after Reconstruction, Section 5 was read broadly: Congress could enact prophylactic legislation preventing constitutional violations even before they occur, and could expand the rights protected beyond what the courts would enforce directly. Katzenbach v. Morgan (1966) upheld a Voting Rights Act provision even though the Court had not independently found a constitutional violation — Congress's judgment that the discrimination it was remedying violated the Fourteenth Amendment was entitled to deference. But City of Boerne v. Flores (1997) dramatically narrowed Section 5, introducing the congruence-and-proportionality test: Congress's Section 5 legislation must be congruent and proportional to the constitutional violation it seeks to remedy. Congress may not redefine constitutional rights or create new ones under Section 5 — it may only enforce the Fourteenth Amendment's requirements as the courts have interpreted them. City of Boerne invalidated the Religious Freedom Restoration Act (RFRA) as applied to states, holding that Congress had identified only sparse evidence of state religious discrimination but responded with a sweeping national rule. Subsequent decisions have applied this test to limit Congress's ability to use Section 5 to abrogate state sovereign immunity, restrict voting, and enforce disability rights against states. The result is a Section 5 power that is significant but substantially narrower than it was in the civil rights era — a change with major practical consequences for federal civil rights legislation.

Current Law (2026)

Legal Authority

• U.S. Const. amend. XIV, § 5 — "The Congress shall have power to enforce, by appropriate legislation, the provisions of this article"
• U.S. Const. amend. XIV, § 1 — The substantive provisions Section 5 enforces: citizenship, privileges or immunities, due process, equal protection
• McCulloch v. Maryland, 17 U.S. 316 (1819) — "Let the end be legitimate... and all means which are appropriate... are constitutional"; the baseline approach to implied congressional power that informed early Section 5 interpretation
• Katzenbach v. Morgan, 384 U.S. 641 (1966) — Congress may enforce Fourteenth Amendment rights prophylactically; New York literacy test ban upheld under Section 5 even without a judicial determination that the test violated the Amendment
• South Carolina v. Katzenbach, 383 U.S. 301 (1966) — Voting Rights Act preclearance requirements upheld under Section 2 of the Fifteenth Amendment (analogous provision to Fourteenth Amendment Section 5); Congress may use drastic remedies for persistent discrimination
• City of Boerne v. Flores, 521 U.S. 507 (1997) — RFRA as applied to states exceeds Congress's Section 5 power; Section 5 is remedial, not substantive; the congruence-and-proportionality test; Congress cannot create new rights under the guise of enforcement
• Florida Prepaid Postsecondary Education Expense Board v. College Savings Bank, 527 U.S. 627 (1999) — Congress cannot abrogate state patent infringement immunity under Section 5 without evidence that states were systematically violating patent holders' due process rights
• Board of Trustees of University of Alabama v. Garrett, 531 U.S. 356 (2001) — ADA Title I employment discrimination abrogation of state immunity invalid under Section 5; Congress's record of state disability discrimination did not justify the scope of the remedy in the employment context
• Nevada Department of Human Resources v. Hibbs, 538 U.S. 721 (2003) — FMLA family leave provision validly abrogates state immunity under Section 5; long history of sex discrimination in government employment supports a congruent and proportional prophylactic measure
• Tennessee v. Lane, 541 U.S. 509 (2004) — ADA Title II as applied to access to courts validly abrogates state immunity; the right of access to courts implicates fundamental rights and the congruence-and-proportionality requirement is satisfied
• Shelby County v. Holder, 570 U.S. 529 (2013) — Voting Rights Act Section 4 coverage formula struck down; formula based on 1960s data not sufficiently responsive to current discrimination to satisfy the requirements for extraordinary measures (using Section 2 of the Fifteenth Amendment, but analysis parallels Section 5 congruence-and-proportionality)

Key Mechanics

Section 5 power operates through a doctrinal test the Court calls "congruence and proportionality": Congress must identify a pattern of constitutional violations by states (the "congruence" requirement — the law must address genuine Fourteenth Amendment violations) and must craft a remedy proportionate to that pattern (the "proportionality" requirement — the remedy cannot sweep so broadly that it effectively creates new constitutional rights rather than enforcing existing ones). Critically, Congress must compile a legislative record of actual violations to support Section 5 legislation; general findings of discrimination without documented evidence of state constitutional violations are insufficient. This framework, established in City of Boerne v. Flores (1997), dramatically narrowed Congress's Section 5 power relative to its broad exercise during the civil rights era. Laws enacted under Section 5 can abrogate state sovereign immunity — allowing Congress to create private suits against states — but only when Congress has identified a pattern of state violations of Fourteenth Amendment rights and crafted a proportionate remedy.

How It Works

The Enforcement Power and Its Origins

Section 5 of the Fourteenth Amendment was the Reconstruction Congress's grant of legislative power to enforce the Amendment's sweeping protections for newly freed African Americans. The Reconstruction Congress distrusted state governments that had enacted Black Codes and other forms of racial oppression — it wanted Congress, not the states, to have the affirmative power to define and protect the rights the Amendment guaranteed.

The early Civil Rights Cases (1883) narrowed this enforcement power by holding that Congress could not reach purely private conduct — Section 5 authorized legislation only against state action, not private discrimination. This limitation set the framework for Section 5 legislation: it must address state or state-official action that violates the Amendment's protections.

For most of the 20th century, the Court read Section 5 broadly. Katzenbach v. Morgan (1966) upheld a Voting Rights Act provision barring New York from applying its English literacy requirement to Puerto Rican citizens who had completed sixth grade in Spanish-language schools in Puerto Rico. New York's literacy requirement had not been independently held unconstitutional by the courts. Justice Brennan's majority reasoned that Congress may use its Section 5 power to prevent discrimination that it has reason to believe violates the Fourteenth Amendment, even without a prior judicial determination — similar to how Congress may use the Necessary and Proper Clause to act in advance of constitutional crises. Congress's judgment that a measure prevents Fourteenth Amendment violations was entitled to deference.

Morgan's approach — Section 5 as expansive legislative authority with considerable deference to congressional judgment — prevailed for three decades. It supported major civil rights legislation including the Civil Rights Act of 1964, the Voting Rights Act of 1965, and the Age Discrimination in Employment Act.

The Boerne Revolution: Congruence and Proportionality

City of Boerne v. Flores (1997) fundamentally changed Section 5 doctrine. The Religious Freedom Restoration Act of 1993 (RFRA) had been enacted by Congress in response to Employment Division v. Smith (1990), which held that neutral, generally applicable laws that incidentally burden religious exercise do not violate the Free Exercise Clause. RFRA required federal and state governments to demonstrate a compelling interest whenever they substantially burdened religious exercise — even through neutral, generally applicable laws. When a historic preservation commission denied a church's expansion permit under a generally applicable zoning ordinance, the church invoked RFRA.

The Supreme Court struck down RFRA as applied to states. Justice Kennedy's majority introduced the congruence-and-proportionality test: Congress may enact remedial and prophylactic legislation under Section 5 to enforce the Fourteenth Amendment, but it may not decree the substance of the Amendment's restrictions — that is the judiciary's role. Section 5 is remedial: Congress may expand enforcement mechanisms for constitutional rights; it cannot expand the constitutional rights themselves.

Applied to RFRA: the Fourteenth Amendment's Equal Protection Clause and Free Exercise protections (as interpreted in Smith) do not require strict scrutiny for neutral, generally applicable laws. RFRA effectively amended the constitutional standard, creating strict scrutiny requirements where none existed. This exceeded Congress's remedial role.

Boerne also added a second requirement: the legislative record must support the scope of the remedy. Congress must identify a pattern of unconstitutional state conduct that the legislation is designed to prevent. The more sweeping the legislative remedy, the more extensive the record of constitutional violations must be.

Applying Congruence and Proportionality: The Garrett-Hibbs-Lane Trilogy

The congruence-and-proportionality test produced a complex body of post-Boerne decisions:

Board of Trustees of University of Alabama v. Garrett (2001): The ADA's Title I (employment) abrogation of state sovereign immunity was held invalid. Chief Justice Rehnquist's majority found Congress had not identified a pattern of state employment discrimination against disabled persons of constitutional significance — the record showed mostly private discrimination, not state constitutional violations. Because the Fourteenth Amendment's rational basis standard permits the state to make employment distinctions based on disability, the ADA's requirement of "reasonable accommodation" (a standard more demanding than the constitutional minimum) was not a congruent and proportional remedy for constitutional violations.

Nevada Department of Human Resources v. Hibbs (2003): The FMLA's family-leave provision was upheld. Chief Justice Rehnquist's majority found a substantial congressional record of state sex discrimination in family leave policies — discrimination that violated the Fourteenth Amendment's heightened scrutiny standard for sex classifications. Because sex discrimination receives heightened scrutiny (not just rational basis) under the Fourteenth Amendment, Congress had more constitutional violations to remedy, and the FMLA's remedy was congruent and proportional.

The lesson: the level of Fourteenth Amendment scrutiny matters enormously. For groups receiving only rational basis review (disabled persons), Congress must document actual constitutional violations — conduct that lacks any rational basis. For groups receiving heightened or strict scrutiny (race, sex), there are more potential constitutional violations because the standard is higher, giving Congress more to remedy.

Tennessee v. Lane (2004): ADA Title II as applied to access to the courts was upheld. The Court reasoned that access to courts implicates fundamental rights (due process) and the right of access to courts as a forum. Because fundamental rights receive strict scrutiny under the Fourteenth Amendment, there were more potential constitutional violations for Congress to address, and the ADA's reasonable modification requirement was congruent and proportional.

The practical result of these cases: the ADA's employment protections cannot be enforced against states by damages suits; the ADA's public services protections can be enforced when they address access to fundamental rights like courts; other applications depend on the specific context and the Fourteenth Amendment scrutiny that would apply.

The Voting Rights Act and Section 5 of the Fifteenth Amendment

Shelby County v. Holder (2013) applied analogous logic to Section 4 of the Voting Rights Act, which used a 1965 coverage formula to identify states required to get federal preclearance before changing voting laws. The Court struck down the coverage formula — not because Congress lacks power to remedy voting discrimination, but because the formula's data was outdated and the coverage pattern did not reflect current conditions. The extraordinary remedy (preclearance) must be justified by current evidence of discrimination. The Fifteenth Amendment's Section 2 enforcement power parallels Fourteenth Amendment Section 5; the same congruence-and-proportionality logic applies.

Shelby County did not question Congress's power to enact a new coverage formula based on current evidence — it specifically invited Congress to do so. But Congress has not enacted new VRA coverage legislation as of 2026, leaving the preclearance regime effectively inoperative for the jurisdictions it once covered.

Section 5 and Abrogation of State Immunity

One of the most practically significant applications of Section 5 is Congress's ability to abrogate state sovereign immunity — to authorize private suits for damages against states in federal court. The Eleventh Amendment (as interpreted in Hans v. Louisiana, 1890) generally bars such suits. But Fitzpatrick v. Bitzer (1976) established that Congress may abrogate state immunity when it acts pursuant to Section 5 of the Fourteenth Amendment, because the Fourteenth Amendment was specifically designed to limit state power and expand federal authority.

For abrogation to be valid, two requirements must be met: (1) Congress must clearly express its intent to abrogate immunity (the Atascadero clear statement rule); and (2) the legislation must be valid Section 5 enforcement, satisfying the congruence-and-proportionality test. Kimel v. Florida Board of Regents (2000) held that ADEA abrogation was invalid because age classifications receive only rational basis review and Congress had not documented a pattern of state age discrimination. Garrett held ADA Title I abrogation invalid for the same reason.

The consequence: Congress can abrogate state immunity to provide private damages remedies against states only for civil rights violations where: (1) the Amendment provides heightened scrutiny (race, sex, national origin, fundamental rights) or (2) the legislative record is extensive enough to show constitutional violations even under rational basis review.

How It Affects You

If you are a civil rights plaintiff suing a state for money damages: Section 5 determines whether Congress validly abrogated state immunity in the statute you are suing under. If the abrogation is invalid (Garrett, Kimel), you cannot recover damages from the state treasury — you can only seek prospective injunctive relief through Ex Parte Young, or sue the individual official personally (subject to qualified immunity) under § 1983. Before filing, analyze whether the statute's abrogation has been upheld for your specific type of claim: ADA Title II abrogation has been upheld for access to courts (Lane) but the scope of valid abrogation in other Title II contexts is case-specific. Title VII's abrogation for sex discrimination has been upheld; ADEA's abrogation for age discrimination has not.

If you are a disability rights advocate: The Garrett/Lane split means your strategy for ADA claims against states depends critically on what type of discrimination you are challenging. For employment discrimination (Title I), you cannot recover damages from the state — pursue prospective relief under Ex Parte Young. For denial of access to programs and services (Title II), damages may be available when the denial implicates a fundamental right (access to courts, voting, education in some circumstances) — the record of constitutional violations in that specific context must be strong. Document specifically which fundamental rights are at stake and build your legislative history argument carefully.

If you are a member of Congress or congressional staff drafting civil rights legislation intended to bind states: After Boerne, effective Section 5 legislation requires: (1) an extensive legislative record documenting unconstitutional state conduct — not just any discrimination but conduct that fails the applicable level of constitutional scrutiny; (2) a remedy that is congruent (responds specifically to the documented constitutional violations) and proportional (not dramatically broader than the problem documented); and (3) explicit abrogation language if you want to authorize damages suits against states. The category of plaintiff matters: legislation protecting groups that receive heightened constitutional scrutiny (race, sex) can be broader; legislation protecting groups receiving only rational basis review (age, disability) requires more careful tailoring to documented constitutional violations.

If you are a state official defending against Section 5 legislation: Challenge both the substantive scope of the legislation (did Congress have a record of constitutional violations sufficient to justify this remedy?) and the abrogation language (was it unmistakably clear?). The Garrett analysis gives you a template: examine the congressional record for the specific type of discrimination at issue; count the instances of documented unconstitutional state conduct (not merely any discrimination — only conduct that fails the constitutional standard that applies to this category); and compare the documented violations to the sweep of the legislative remedy. If the remedy is dramatically broader than the documented violations, a congruence-and-proportionality challenge is viable.

State Variations

Section 5 of the Fourteenth Amendment is a federal constitutional provision governing Congress's power to legislate against states. States are not parties to Section 5 — they are the subjects of Section 5 enforcement. Relevant state context:

State civil rights legislation: Many states have enacted their own civil rights statutes that provide protections beyond what federal Section 5 legislation requires. These state statutes are enforced in state courts under state law, not under Section 5. States may provide broader protections than the federal floor (more groups covered, stronger anti-discrimination requirements, broader damages remedies) regardless of Section 5 limitations.

State constitutional provisions: State constitutions may independently prohibit discrimination and protect rights that the federal Fourteenth Amendment does not reach or that Congress cannot effectively enforce through Section 5. State constitutional litigation provides an alternative vehicle for civil rights plaintiffs who cannot rely on federal Section 5 legislation.

State compliance with Section 5 legislation: States that are not complying with validly enacted Section 5 legislation (the ADA, Title VII, Voting Rights Act provisions not struck down by Shelby County) face federal enforcement through prospective Ex Parte Young relief and, where abrogation is valid, damages suits. Federal agency enforcement actions (Department of Justice, EEOC) can also compel compliance without the abrogation analysis.

Pending Legislation

• John Lewis Voting Rights Advancement Act: Federal legislation to update the Voting Rights Act's coverage formula following Shelby County, using current evidence of voting discrimination to identify jurisdictions subject to preclearance; has passed the House in multiple Congresses but has not been enacted; would need to satisfy the Shelby County congruence-and-proportionality analysis.
• George Floyd Justice in Policing Act: Federal legislation limiting qualified immunity and expanding civil rights enforcement against state and local police; some provisions attempt to use Section 5 to abrogate state immunity for civil rights violations in law enforcement; has not been enacted.
• RFRA and state religious liberty: Federal RFRA remains valid as applied to federal government actions (Gonzales v. O Centro Espírita Beneficente União do Vegetal, 2006); approximately twenty states have enacted state RFRAs that apply to state and local government.

Recent Developments

• 2013 — Shelby County v. Holder: VRA Section 4 coverage formula struck down; Section 5 preclearance effectively suspended for jurisdictions previously covered; voting rights enforcement shifted from preclearance to § 2 litigation after voting restrictions have been implemented.
• 2021 — Brnovich v. Democratic National Committee: Narrowed § 2 of the Voting Rights Act's prohibition on voting practices that result in racial disparities; limited the remaining voting rights enforcement tool after Shelby County's preclearance suspension.
• 2023 — Allen v. Milligan: Section 2 of the VRA applied to require Alabama to create a second majority-Black congressional district; illustrates that Section 2 (the non-preclearance voting rights tool) remains viable even after Shelby County.
• 2024–2026 — Congressional enforcement power litigation: Courts continue to adjudicate the scope of Section 5 authority in ADA Title II cases, FMLA applications to state employers, and other civil rights contexts; the congruence-and-proportionality analysis is applied case-by-case to specific programs and contexts.