Fourteenth Amendment's Equal Protection Clause

The Fourteenth Amendment's Equal Protection Clause (1868) prohibits states from denying any person within their jurisdiction the equal protection of the laws, making it the constitutional foundation for civil rights rulings like Brown v. Board of Education and a core concept in AP Gov Unit 3.

Verified for the 2027 AP US Government examLast updated June 2026

What is the Fourteenth Amendment's Equal Protection Clause?

The Equal Protection Clause is the part of the Fourteenth Amendment (ratified 1868) that says no state may "deny to any person within its jurisdiction the equal protection of the laws." In plain terms, a state government can't sort people into categories (by race, sex, national origin, and so on) and hand out different legal treatment without serious justification. It's the constitutional hook for almost every major civil rights case you'll study.

Notice the word state. The clause was written specifically to restrain state governments after the Civil War, because states were the ones passing discriminatory laws. That's why the Fourteenth Amendment, not the Bill of Rights, is the engine of the civil rights cases. The Supreme Court breathes life into the clause case by case: in Brown v. Board of Education (1954), it held that racially segregated public schools are "inherently unequal" and therefore violate equal protection. The clause also gives Congress and the courts a constitutional anchor for civil rights legislation, like the Civil Rights Act of 1964.

Why the Fourteenth Amendment's Equal Protection Clause matters in AP Gov

This term lives in Unit 3: Civil Liberties and Civil Rights, and it's the bridge between the two halves of that unit. Topic 3.7 (Selective Incorporation & the 14th Amendment) covers learning objective AP Gov 3.7.A, which asks you to explain how the Fourteenth Amendment limits what states can do. The Due Process Clause does that for civil liberties (incorporating the Bill of Rights against the states), while the Equal Protection Clause does it for civil rights (banning discriminatory state treatment). Same amendment, two different jobs. If you can keep those two clauses straight, you've basically got the organizing logic of Unit 3. Equal protection is also the constitutional reasoning behind Brown v. Board, one of the required Supreme Court cases, so you're expected to connect the clause to the case's holding, not just name-drop it.

How the Fourteenth Amendment's Equal Protection Clause connects across the course

Due Process Clause (Unit 3)

These two clauses sit side by side in the same sentence of the Fourteenth Amendment but do different work. Due process is the vehicle for selective incorporation, which applies Bill of Rights protections to the states. Equal protection is about discriminatory treatment, not procedure. Knowing which clause does which job is one of the most common AP Gov distinctions tested.

Brown v. Board of Education (Unit 3)

Brown is the Equal Protection Clause's signature case. The Court ruled that 'separate but equal' schools violate equal protection because segregation is inherently unequal. On the exam, if a question asks which clause Brown applied, the answer is equal protection, full stop.

Civil Rights Act of 1964 (Unit 3)

The Equal Protection Clause restrains state governments, but it doesn't reach private discrimination on its own. The Civil Rights Act of 1964 is Congress filling that gap with legislation banning discrimination in employment and public accommodations. Together they show how courts and Congress each advance equality through different tools.

Civil Rights Cases (1883) (Unit 3)

These cases established the 'state action' limit, ruling that the Fourteenth Amendment only restricts governments, not private individuals or businesses. That's why later civil rights laws had to rest on other constitutional powers, and it explains the boundary of what equal protection can do.

Is the Fourteenth Amendment's Equal Protection Clause on the AP Gov exam?

Multiple-choice questions love to test whether you can match a fact pattern to the right clause of the Fourteenth Amendment. If a state law discriminates between groups of people, that's equal protection. If a state denies someone a fair procedure or a Bill of Rights protection (like admitting a coerced confession that fails federal standards), that's due process and selective incorporation. Mixing those up is the classic trap. You should also be ready for the required-case angle: Brown v. Board applied the Equal Protection Clause to strike down school segregation, and a SCOTUS comparison FRQ could ask you to connect Brown's equal protection reasoning to a nonrequired case in a provided scenario. When you write about it, name the clause precisely ("the Equal Protection Clause of the Fourteenth Amendment"), say it applies to state governments, and link it to the constitutional holding, not just the outcome.

The Fourteenth Amendment's Equal Protection Clause vs Due Process Clause

Both clauses come from the same section of the Fourteenth Amendment, which is exactly why they get confused. The Due Process Clause is about fair procedures and is the doorway for selective incorporation, extending Bill of Rights protections (speech, religion, search and seizure) to the states. The Equal Protection Clause is about discriminatory treatment, requiring states to apply laws equally to similar groups of people. Quick test: if the problem is how the government acted (unfair process, denied liberty), think due process. If the problem is who the law singles out (race, sex, a group classification), think equal protection.

Key things to remember about the Fourteenth Amendment's Equal Protection Clause

  • The Equal Protection Clause is in the Fourteenth Amendment and prohibits states from denying any person the equal protection of the laws.

  • It applies to state governments and other government action, not to private individuals or businesses, a limit set by the Civil Rights Cases of 1883.

  • Brown v. Board of Education (1954) used the Equal Protection Clause to rule that racially segregated public schools are inherently unequal and unconstitutional.

  • Equal protection handles discrimination claims, while the neighboring Due Process Clause handles selective incorporation of the Bill of Rights; the AP exam tests this distinction directly.

  • The clause is the constitutional foundation for the civil rights half of Unit 3, including movements and legislation like the Civil Rights Act of 1964.

Frequently asked questions about the Fourteenth Amendment's Equal Protection Clause

What is the Fourteenth Amendment's Equal Protection Clause in simple terms?

It's the part of the Fourteenth Amendment (ratified 1868) that says no state can deny any person the equal protection of the laws. Basically, states can't treat people unequally under the law without strong justification, especially based on race or other group classifications.

Does the Equal Protection Clause apply to private businesses?

No. The clause restricts state and government action only, a limit the Supreme Court set in the Civil Rights Cases (1883). Private discrimination is reached through legislation instead, most famously the Civil Rights Act of 1964.

What's the difference between the Equal Protection Clause and the Due Process Clause?

Both are in the Fourteenth Amendment, but due process is about fair procedures and is the tool for selective incorporation (applying the Bill of Rights to states), while equal protection is about banning discriminatory treatment. Discrimination questions point to equal protection; incorporation questions point to due process.

Which clause did Brown v. Board of Education use?

The Equal Protection Clause of the Fourteenth Amendment. In 1954, the Court held that 'separate but equal' public schools are inherently unequal and therefore violate equal protection. This is a required case on the AP Gov exam, so know the clause, not just the result.

Is the Equal Protection Clause the same thing as selective incorporation?

No. Selective incorporation runs through the Due Process Clause of the Fourteenth Amendment and extends Bill of Rights protections to the states. The Equal Protection Clause is a separate guarantee against unequal treatment by state governments. They're in the same amendment but do different jobs.