14th Amendment in Simple Terms: Citizenship, Due Process, Equality

The 14th Amendment, in simple terms, guarantees that anyone born or naturalized in the United States is a citizen and forces every state to treat people fairly and equally under the law. It was ratified on July 9, 1868, after the Civil War, and it remains one of the most frequently cited parts of the Constitution in court today.¹ The amendment has five sections. Section 1 does most of the heavy lifting and contains the four clauses people usually mean when they talk about the amendment: citizenship, due process, equal protection, and privileges or immunities. The other four sections deal with representation in Congress, disqualifying insurrectionists from office, the public debt, and Congress’s power to enforce everything the amendment promises.

Who Is a Citizen

The amendment’s first line settles a question that split the country: anyone born on U.S. soil or who goes through naturalization is a citizen of both the United States and the state where they live.¹ That language directly overturned the Supreme Court’s 1857 ruling in Dred Scott v. Sandford, which had held that Black Americans could never be citizens.²

Birthright citizenship is automatic. If you’re born here, it doesn’t matter who your parents are, where they came from, or what their immigration status is. You’re also a citizen of the state where you live, so no state can invent its own test for who qualifies as an American.

The one qualifier in the text is the phrase “subject to the jurisdiction” of the United States. In practice, this exception is narrow. The clearest example involves children born to foreign diplomats who hold full diplomatic immunity. Because accredited diplomats are legally beyond U.S. jurisdiction, their children born on American soil do not automatically receive citizenship. Even that has a limit: if one parent is a U.S. citizen and the other is the diplomat, the child still qualifies.³

Due Process: The Government Has to Play Fair

Section 1 also stops any state from taking away a person’s life, freedom, or property without “due process of law.”¹ In plain terms, the government must follow fair, transparent procedures before it punishes you, locks you up, or takes what’s yours. That means notice of what you’re accused of, a real chance to defend yourself, and a neutral decision-maker who isn’t biased.

Applying the Bill of Rights to the States

The Due Process Clause has done something the Bill of Rights on its own could not. When the first ten amendments were written, they only restricted the federal government. A state could, in theory, silence a newspaper or deny someone a lawyer without violating the Constitution. Through decades of Supreme Court rulings, the Due Process Clause has been used to apply most Bill of Rights protections to state and local governments too.⁴ Your right to free speech, to practice your religion, to be free from unreasonable searches, and to have a lawyer in a criminal case now apply whether you’re facing a federal agency or a local police department. A few protections, like the Seventh Amendment’s civil jury right, still limit only the federal government.

Rights the Constitution Doesn’t Spell Out

Courts have also read the Due Process Clause as protecting certain fundamental rights the Constitution never lists by name. This is called substantive due process. Under this framework, the Supreme Court has recognized rights to privacy, to make decisions about raising children, and to marry. In Obergefell v. Hodges (2015), the Court held that same-sex couples cannot be denied marriage licenses under the Due Process and Equal Protection Clauses.⁵

The boundaries of substantive due process shift with the Court. In Dobbs v. Jackson Women’s Health Organization (2022), the Court overruled Roe v. Wade and held that the Due Process Clause does not protect a right to abortion.⁶

Equal Protection: The Same Rules for Everyone

The Equal Protection Clause says no state can “deny to any person within its jurisdiction the equal protection of the laws.”¹ The word is “person,” not “citizen.” This protection covers everyone physically present in a state, including noncitizens. If a law treats one group of people differently from another, the government needs a good reason.

How good that reason has to be depends on the kind of distinction the law draws. Courts use three levels of review:

Strict scrutiny applies when a law classifies people by race, national origin, or religion. The government must prove a compelling reason and that the law is precisely tailored to it. Laws rarely survive this test.
Intermediate scrutiny applies to classifications based on gender and similar characteristics. The government has to show an important reason and a substantial connection between the law and that reason.
Rational basis review covers everything else, like most economic regulations. The person challenging the law has to prove the government has no rational reason for it. Most laws survive.

The most famous equal protection case is Brown v. Board of Education (1954), where a unanimous Supreme Court ruled that racially segregated public schools were inherently unequal and therefore unconstitutional.⁷ That decision dismantled the “separate but equal” rule that had let states run segregated institutions for decades.⁸ The clause keeps reshaping American law. In Students for Fair Admissions v. Harvard (2023), the Court held that race-conscious college admissions programs violated the Equal Protection Clause, effectively ending affirmative action in higher education.⁹

Privileges or Immunities

Section 1 also bars states from enforcing any law that would “abridge the privileges or immunities of citizens of the United States.”¹ The idea is that certain rights come with being an American citizen, and no state can strip them away. You can move freely between states, and when you arrive in a new one, you’re entitled to be treated as a full member of that community.

The clause has had a rough history. Just five years after ratification, the Supreme Court gutted it in the Slaughter-House Cases (1873), ruling that it protected only a narrow set of rights tied to national citizenship and left nearly everything else to the states.¹⁰ That reading drained the clause of most of its force for over a century. It got a second life in Saenz v. Roe (1999), where the Court struck down a California law that paid new residents lower welfare benefits based on how long they’d lived in the state. The Court held that the clause protects the right to travel and prevents states from punishing newcomers with residency requirements.¹¹

How People Get Counted for Congress

Section 2 changed how the government counts people for the purpose of distributing seats in the House of Representatives. Before the amendment, the Constitution’s three-fifths clause counted enslaved people as three-fifths of a person, inflating the political power of slaveholding states without giving enslaved people any voice. Section 2 replaced that formula by counting every person in a state equally.¹²

Disqualification for Insurrection

Section 3 bars anyone who swore an oath to support the Constitution and then participated in an insurrection or rebellion from holding federal or state office. Congress can lift that ban, but only with a two-thirds vote of both chambers.¹³ Originally aimed at former Confederate officials, this provision was largely dormant for more than a century.

It returned to national attention in 2024 when Colorado attempted to remove a presidential candidate from the ballot under Section 3. In Trump v. Anderson, the Supreme Court unanimously reversed that effort, holding that only Congress has the power to enforce Section 3 against federal officeholders and candidates. States can disqualify people from state office under the provision, but they have no authority to apply it to federal races.¹⁴

Public Debt

Section 4 declares that the public debt of the United States “shall not be questioned.”¹⁵ This was partly a practical measure after the Civil War: it ensured the Union’s war debts would be honored while declaring all Confederate debts illegal and void. The section also barred any payment for claims related to the “loss or emancipation” of enslaved people, so former slaveholders could not sue for compensation. The provision has resurfaced periodically in debates over the federal debt ceiling.

Congress’s Power to Enforce

Section 5 gives Congress the power to enforce everything in the amendment through legislation.¹³ Without it, the amendment would be a statement of principles with no way to back it up. Congress has relied on this authority for landmark laws including the Civil Rights Act of 1964 and the Voting Rights Act of 1965. Section 5 is what turns the amendment’s promises into enforceable federal law.

1
National Archives. 14th Amendment to the U.S. Constitution: Civil Rights (1868)
2
National Archives. Dred Scott v. Sandford (1857)
3
U.S. Citizenship and Immigration Services. Children Born in the United States to Accredited Diplomats
4
Congress.gov. Overview of Incorporation of the Bill of Rights
5
Justia U.S. Supreme Court Center. Obergefell v. Hodges, 576 U.S. 644 (2015)
6
Supreme Court of the United States. Dobbs v. Jackson Women’s Health Organization (2022)
7
Oyez. Brown v. Board of Education of Topeka (1)
8
Library of Congress. Constitution Annotated – Section: Separate but Equal
9
Justia U.S. Supreme Court Center. Students for Fair Admissions, Inc. v. President and Fellows of Harvard College (2023)
10
Justia U.S. Supreme Court Center. Slaughterhouse Cases, 83 U.S. 36 (1873)
11
Justia U.S. Supreme Court Center. Saenz v. Roe, 526 U.S. 489 (1999)
12
Congress.gov. U.S. Constitution Amendment 14 Section 2
13
Cornell Law Institute. U.S. Constitution Amendment XIV
14
Supreme Court of the United States. Trump v. Anderson (2024)
15
Congress.gov. U.S. Constitution Amendment 14 Section 4