What violated the 14th Amendment? A clear explainer

What Section 1 of the Fourteenth Amendment protects

Text and components: privileges or immunities, due process, equal protection, 14th amendment

Section 1 brings together three related protections that courts use to decide whether a state action violates the Constitution: the Privileges or Immunities Clause, the Due Process Clause, and the Equal Protection Clause. That structure is the starting point for most challenges to state laws and official procedures because Section 1 is the provision that ties individual rights and procedural safeguards to state authority, and courts look to its text and precedents to identify violations. Saenz v. Roe opinion

Modern litigation, however, often advances claims under either Due Process or Equal Protection rather than the Privileges or Immunities Clause, because the latter has been narrowly construed in historic decisions that limited its scope. That practical pattern explains why many contemporary claims about incorporated rights or government procedures are argued through due process or equal protection frameworks rather than as privileges or immunities claims. The Slaughter-House Cases opinion

Equal Protection: when state classifications trigger heightened review

Race-based classifications and strict scrutiny

A law treats people differently when it creates a classification, for example by race, national origin, or other listed characteristics, and courts examine such classifications to decide whether they violate the Equal Protection Clause. When a classification is race-based, the Court has applied strict scrutiny, the most demanding test for the government to satisfy, and that approach has driven major rulings finding state laws unconstitutional. Brown v. Board opinion

How Brown v. Board shaped modern Equal Protection analysis

In Brown the Supreme Court held that state-imposed racial segregation of public schools violated Equal Protection, a decision that reshaped how courts view classifications that single out groups by race and set a precedent for applying close judicial review to such laws. Brown remains a central example when courts consider whether a law’s purpose or effect targets a protected group. Brown v. Board opinion

Due process: procedural and substantive routes to a violation

Procedural due process: notice and opportunity to be heard

Procedural due process challenges focus on whether government procedures are adequate before the state deprives someone of liberty or property; courts use a balancing test that asks how important the private interest is, how risky the procedures are of error, and what government interest is at stake. That three-factor approach is the standard tool for deciding if a procedure itself violates the Fourteenth Amendment. Mathews v. Eldridge opinion

Practical examples include whether an agency gives adequate notice of a hearing, whether a person can meaningfully contest a decision, and whether there is an available appeal or review; when those elements are missing or inadequate, a court may find a procedural due process violation using the Mathews framework. Mathews v. Eldridge opinion

Substantive due process: fundamental rights and judicial protection

Substantive due process refers to the Court recognizing certain fundamental rights that the government cannot infringe without strong justification, as the Court did when it recognized a constitutional right to marry in Obergefell; that holding illustrates how courts treat some personal liberties as protected against state interference. Obergefell v. Hodges opinion

At the same time, substantive-due-process protections are not fixed: the Court’s decision in Dobbs returned primary authority over abortion regulation to the states, showing how doctrinal boundaries can shift with new rulings and different judicial interpretations. Dobbs v. Jackson Women’s Health Organization opinion (see coverage at CNN and analysis at lawandinequality.org).

Privileges or Immunities: history, limits, and modern questions

The Slaughter-House Cases and long-term narrowing

The Privileges or Immunities Clause was significantly narrowed by the Slaughter-House Cases, a long-standing decision that curtailed the clause’s role in protecting individual rights and pushed most incorporation arguments toward the Due Process and Equal Protection clauses. That history explains why the clause is less prominent in modern constitutional litigation. The Slaughter-House Cases opinion

Saenz v. Roe and the limited modern applications

There are limited modern uses of the clause, for example in cases tied to interstate travel where the Court has recognized a right under the clause, but these applications remain narrow and do not broadly displace the role of due process or equal protection in most incorporation claims. Saenz v. Roe opinion

The legal tests courts use to decide violations

Strict scrutiny, intermediate scrutiny, and rational basis review

When courts evaluate Equal Protection challenges they place the contested statute into a category that determines the scrutiny level: strict scrutiny for race-based classifications, intermediate scrutiny for certain quasi-suspect classes, and rational basis review for ordinary economic and social regulation; the level controls how closely a court examines the law. Brown v. Board opinion

The Mathews v. Eldridge three-factor balancing test for procedures

The Mathews test asks three questions: what private liberty or property interest is at stake, how likely the current procedures are to produce error and what is the probable magnitude of any error, and what is the government’s interest including fiscal and administrative burdens. Courts weigh those factors to determine whether additional process is constitutionally required. Mathews v. Eldridge opinion

These tests interact: a case that implicates both a protected classification and a procedural deprivation will require attention to both the applicable scrutiny and the procedural safeguards, and shifts in doctrine can change outcomes over time. Dobbs v. Jackson Women’s Health Organization opinion

Concrete examples: cases courts found to violate Section 1

Racial segregation and Brown

Brown is a clear example where the Court found state-imposed racial segregation violated the Equal Protection Clause, demonstrating how a law that treats people differently by race can be set aside when it fails strict scrutiny and when its very purpose is exclusion. Brown v. Board opinion

Recognition of marriage and Obergefell

Obergefell illustrates how substantive due process and equal protection can intersect when the Court recognizes a fundamental personal right, here the right to marry, and concludes that the state cannot deny that right without adequate justification. Obergefell v. Hodges opinion

Procedural-deprivation scenarios guided by Mathews

Procedural-deprivation cases often involve government decisions that remove or decide a liberty or property interest without sufficient notice, hearing, or review; courts apply Mathews to decide whether added procedures like a prompt hearing or meaningful review are constitutionally required. Mathews v. Eldridge opinion

What the Dobbs decision shows about substantive-due-process limits

Dobbs’ effect on abortion as a constitutional right

The Dobbs decision held that the Constitution does not confer a right to abortion and returned primary authority to the states to regulate or prohibit it, illustrating that recognition of fundamental rights under substantive due process depends on the Court’s interpretation over time. Dobbs v. Jackson Women’s Health Organization opinion

Broader implications for other claimed fundamental rights

Because Dobbs shows doctrinal change is possible, claims that rely on substantive due process for protection of a particular liberty can face uncertainty and may succeed or fail depending on how courts apply historical analysis, precedent, and the framework for identifying fundamental rights. Dobbs v. Jackson Women’s Health Organization opinion

How state laws and procedures commonly create risk of a violation

Race- or class-based statutory distinctions

Statutes that draw lines based on protected characteristics, especially race, or that impose burdens on identifiable groups, are the archetypal triggers for Equal Protection challenges because they prompt close judicial review of the law’s purpose and fit with its stated goals. Brown v. Board opinion

Regulations that remove procedural protections

Rules or practices that deny notice, an opportunity to be heard, or a form of meaningful review can create procedural due process problems; courts use Mathews to assess whether additional process is required based on the interests and risks present. Mathews v. Eldridge opinion

Not all government action that causes hardship will be unconstitutional, however; many routine economic and regulatory measures survive rational basis review unless they single out a protected class or abridge a fundamental right. Brown v. Board opinion

Common misunderstandings about what does and does not violate the Fourteenth Amendment

Policy disagreement versus constitutional violation

Many people assume every unpopular state policy is unconstitutional, but courts distinguish policy choices from constitutional violations and apply doctrinal tests rather than resolving disputes on political or moral grounds. Look for a legal standard like a suspect classification or deprivation of a protected interest rather than relying on disagreement alone. Mathews v. Eldridge opinion

Mistaking political outcomes for court-enforceable rights

Labeling an outcome unconstitutional requires the legal elements the Court has identified; plaintiffs must show a classification or a deprivation tied to an interest the Court protects, and courts often afford deference to legislative choices when only economic regulation is involved. Brown v. Board opinion

How procedural-due-process claims are evaluated step by step

Identify the liberty or property interest

First courts ask if the claimant has an objectively defined liberty or property interest that the state has sought to deprive, which can include benefits, licenses, or fundamental personal rights depending on the context. Mathews v. Eldridge opinion

Apply the Mathews balancing test

Next courts apply the Mathews factors: the private interest’s importance, the procedural risk of error, and the government’s interest in efficiency or cost; in practice this looks like a short checklist that guides whether additional notice, an adversary hearing, or review is necessary. Mathews v. Eldridge opinion

Typical outcomes include courts requiring prompt hearings where the private interest is high and the current procedures are likely to produce error, while leaving procedures unchanged where the burden on government is substantial and the risk of error is low.

How equal-protection claims are typically framed and proven

Identify the classification or the discriminatory effect

Plaintiffs start by showing a statutory classification or a policy’s disparate impact on a protected group; courts then assess whether the law is facially discriminatory or has discriminatory intent or effect, which frames the choice of scrutiny level. Brown v. Board opinion

Choose the applicable level of scrutiny and show fit or lack of fit

Under strict scrutiny the government must show a compelling interest and that the law is narrowly tailored to achieve it, whereas under intermediate scrutiny the fit requirement is less demanding, and under rational basis the law need only be plausibly related to a legitimate interest; the chosen level shapes the evidence both sides present. Brown v. Board opinion

Practical steps for citizens, advocates, and journalists

How to check if a claim is supported by case law

Start with Supreme Court opinions and leading case summaries to see how the Court has applied Equal Protection and Due Process tests in similar circumstances; primary opinions show the legal tests and sample outcomes that reporters and advocates should reference. Brown v. Board opinion (see constitutional rights).

Where to find primary documents and authoritative summaries

Use reputable legal databases and the texts of Supreme Court opinions for authoritative language, check for controlling precedent that addresses the same classification or right, and prefer court opinions over commentary when assessing whether an action likely violates Section 1. Obergefell v. Hodges opinion (see news index).

When evaluating a statute, look for a suspect classification, a deprivation of a clearly protected interest, or procedural gaps like missing notice or review; these are common signals that a constitutional claim may be plausible. Mathews v. Eldridge opinion (see about).

Conclusion: key takeaways and unresolved legal questions

Summary of tests and examples

Section 1 is enforced mainly through Equal Protection and Due Process doctrines, while Privileges or Immunities has played a limited role; strict scrutiny governs many race-based claims and Mathews guides procedural claims, and landmark cases like Brown and Obergefell illustrate these paths to finding a violation. Saenz v. Roe opinion

Open questions for courts going forward

Open issues include whether the Privileges or Immunities Clause will see broader revival and how courts will reconcile new state laws, especially in areas affected by Dobbs, with established Equal Protection and Due Process tests; these are questions to watch as litigation progresses. Dobbs v. Jackson Women’s Health Organization opinion