The 14th Amendment, explained in plain terms, is the post–Civil War addition to the Constitution that redefined American citizenship and put the states under federal constitutional limits for the first time. Ratified on July 9, 1868, it runs five sections: Section 1 establishes birthright citizenship and requires states to provide due process and equal protection; Section 2 changes how House seats are apportioned; Section 3 bars insurrectionists from office; Section 4 protects the public debt; and Section 5 gives Congress the power to enforce the whole amendment through legislation.1National Archives. 14th Amendment to the U.S. Constitution: Civil Rights (1868) More Supreme Court cases have turned on this amendment than on any other.
Section 1: Citizenship, Due Process, and Equal Protection
Section 1 is the part of the amendment that shows up in modern life. It reads:
“All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.”2Congress.gov. U.S. Constitution – Fourteenth Amendment
Four separate guarantees sit in that paragraph, and each has generated its own body of law.
Who Is a Citizen
The opening sentence overturned Dred Scott v. Sandford (1857), which had held that people of African descent could never be U.S. citizens. Under the Citizenship Clause, anyone born on U.S. soil and subject to its jurisdiction is a citizen. The “subject to the jurisdiction thereof” language has historically been read to exclude only narrow categories such as the children of foreign diplomats.3United States Senate. Landmark Legislation: The Fourteenth Amendment
The Supreme Court confirmed this in United States v. Wong Kim Ark (1898), holding that a child born in San Francisco to Chinese immigrant parents was a U.S. citizen. That case remains the leading precedent, and it makes a child’s citizenship independent of the parents’ status.
Due Process
The clause forbidding states from taking “life, liberty, or property, without due process of law” operates on two tracks. Procedural due process requires fair procedures — notice, a hearing — before the government takes something from you. Substantive due process treats certain rights as so fundamental that no procedure justifies taking them away.
The procedural side reshaped state criminal courts. In Gideon v. Wainwright (1963), the Court held that anyone charged with a serious crime who cannot afford a lawyer must have one appointed. The Sixth Amendment already guaranteed that right against the federal government; the Due Process Clause extended it to the states, where most criminal cases are actually tried.4Justia. Gideon v. Wainwright
Gideon is one example of a broader move called selective incorporation. The Bill of Rights originally restrained only the federal government. Through the 14th Amendment, the Court has applied almost all of those protections against the states, one right at a time. The Second Amendment was incorporated in McDonald v. City of Chicago (2010).5Justia. McDonald v. City of Chicago A few provisions, including the Fifth Amendment’s grand jury requirement and the Seventh Amendment’s civil jury right, still are not.
The substantive side is where the most contested cases live. The Court has recognized fundamental rights to marry, to raise children without state interference, to use contraception, and to engage in intimate relationships. Obergefell v. Hodges (2015) drew on both the Due Process and Equal Protection Clauses to recognize a right to same-sex marriage.6Justia. Obergefell v. Hodges In Dobbs v. Jackson Women’s Health Organization (2022), the Court overruled Roe v. Wade and held that the Constitution does not protect a right to abortion, returning the question to state legislatures. The majority said the ruling applied only to abortion and did not disturb other substantive due process precedents. Justice Thomas’s concurrence urged reconsidering them anyway. The boundaries of this doctrine are actively contested.
Equal Protection
The final clause of Section 1 requires every state to give all people within its borders “the equal protection of the laws.” Its early history is bleak. Plessy v. Ferguson (1896) upheld racial segregation under a “separate but equal” theory,7National Archives. Plessy v. Ferguson (1896) and that precedent stood for nearly six decades until Brown v. Board of Education (1954) held that segregated public schools are “inherently unequal” and violate the amendment.8Justia. Brown v. Board of Education of Topeka
Modern equal protection cases turn on levels of scrutiny. Laws classifying people by race or national origin get strict scrutiny: the government must show the law is narrowly tailored to a compelling interest, a bar rarely cleared. Laws classifying by sex get intermediate scrutiny, requiring an important objective and a substantially related means. Everything else gets rational basis review, which asks only whether the law is rationally related to a legitimate purpose. Laws reviewed under rational basis almost always survive.
Privileges or Immunities
The clause barring states from abridging “the privileges or immunities of citizens” was written to protect a broad set of fundamental rights. Five years after ratification, the Slaughter-House Cases (1873) read it to cover only a narrow set of rights tied to federal citizenship, leaving basic civil rights to the states.9Justia. Slaughterhouse Cases That reading has never been formally overruled. In practice, the work this clause might have done has been done by the Due Process and Equal Protection Clauses instead.
Section 2: How House Seats Are Apportioned
Section 2 replaced the original Constitution’s three-fifths compromise, which had counted enslaved people as “three fifths of all other Persons” for purposes of allocating House seats.10Congress.gov. U.S. Constitution – Article I The 14th Amendment requires that representatives be apportioned “according to their respective numbers, counting the whole number of persons in each State, excluding Indians not taxed.”2Congress.gov. U.S. Constitution – Fourteenth Amendment
The section also contained a penalty aimed at former Confederate states: if a state denied the vote to eligible male citizens over twenty-one, its House delegation would shrink proportionally. Congress never enforced that penalty, even as Southern states disenfranchised Black voters through poll taxes, literacy tests, and grandfather clauses for decades. The voting-age and sex references were later superseded by the 15th, 19th, and 26th Amendments.
The “whole number of persons” language still matters. In Evenwel v. Abbott (2016), the Supreme Court confirmed that states may draw legislative districts based on total population, not just eligible voters, because representatives serve everyone in a district.11Justia. Evenwel v. Abbott
Section 3: Disqualification for Insurrection
Section 3 bars anyone who previously swore an oath to support the Constitution — as a member of Congress, a federal officer, a state legislator, or a state executive or judicial officer — from holding federal or state office if they later “engaged in insurrection or rebellion” or gave “aid or comfort” to enemies of the United States.2Congress.gov. U.S. Constitution – Fourteenth Amendment The bar operates as a qualification for office, like an age or citizenship requirement, and no criminal conviction is needed to trigger it. Congress can remove the disability by a two-thirds vote of both houses.
The provision was written with former Confederates in mind, and Congress used its removal power fairly quickly. The Amnesty Act of 1872 lifted the disqualification from most former Confederates, with exceptions for the highest-ranking officials.12Congress.gov. Cawthorn v. Amalfi
Section 3 returned to prominence after January 6, 2021. Several states tried to disqualify candidates from the ballot under this provision, and the Supreme Court addressed those efforts in Trump v. Anderson (2024). The Court held unanimously that states cannot enforce Section 3 against federal officeholders or candidates; only Congress can, through legislation passed under Section 5.13Justia. Trump v. Anderson No such enforcement statute currently exists, so as a practical matter Section 3 cannot be applied to federal candidates without congressional action.
Section 4: The Public Debt Clause
Section 4 says “the validity of the public debt of the United States, authorized by law . . . shall not be questioned,” and includes debts for pensions and bounties tied to suppressing the rebellion. It then voids any debt incurred to support the rebellion and any claim for compensation for emancipated slaves.2Congress.gov. U.S. Constitution – Fourteenth Amendment
The first sentence protected Union war bonds and military pensions from repudiation by a restored Congress that might include Southern members. The Supreme Court read the clause more broadly in Perry v. United States (1935), calling Section 4 “confirmatory of a fundamental principle” and saying that “validity of the public debt” reaches “whatever concerns the integrity of the public obligations.”14Justia. Perry v. United States That language has resurfaced during modern debt ceiling fights, with some scholars and policymakers arguing the clause would let the president keep borrowing if Congress refused to raise the statutory limit. No president has tested the theory, and the question is unresolved.
Section 5: Congressional Enforcement Power
Section 5 is short: “The Congress shall have power to enforce, by appropriate legislation, the provisions of this article.”15Congress.gov. Fourteenth Amendment Section 5 Major civil rights statutes, including the Civil Rights Act of 1964 and the Voting Rights Act of 1965, were enacted in part under this authority. Without it, the amendment’s guarantees would depend entirely on courts deciding individual cases.
The power has limits. In City of Boerne v. Flores (1997), the Supreme Court held that any Section 5 law must be “congruent and proportional” to the constitutional violations it aims to prevent or remedy.16Justia. City of Boerne v. Flores Congress can enforce rights the Court has recognized and can pass preventive measures, but it cannot use Section 5 to redefine what the Constitution means. That remains the framework courts use to test whether Congress has overreached.