Marbury v. Madison in AP US Government
Marbury v. Madison (1803) is the Supreme Court case in which Chief Justice John Marshall established judicial review, the power of courts to declare laws and government actions unconstitutional. The Court struck down part of the Judiciary Act of 1789 because it conflicted with Article III. That made the judiciary a working check on Congress and the president.
This definition is part of Fiveable's AP US Government review, which also has guided practice questions.
An undelivered commission and a request for a court order
At the end of his term in 1801, President John Adams made a batch of last-minute judicial appointments. One went to William Marbury, named a justice of the peace for the District of Columbia. His commission was signed and sealed, but it wasn't delivered before Thomas Jefferson took office.
Jefferson's Secretary of State, James Madison, refused to deliver it. Marbury went straight to the Supreme Court and asked for a writ of mandamus, a court order forcing an official to do his job. He relied on Section 13 of the Judiciary Act of 1789, which Marshall interpreted as allowing the Supreme Court to issue a writ of mandamus in a case brought under its original jurisdiction.
The question before the Court was whether it actually had the power to give Marbury what he asked for. The case was politically risky. If Marshall ordered Madison to deliver the commission and Jefferson ignored the order, the Court would look powerless.
Marshall's holding: Marbury loses, and the Court gains judicial review
Marshall said Marbury had a legal right to the commission. He then ruled that the Court couldn't issue the order anyway. Article III spells out the narrow set of cases the Supreme Court hears under original jurisdiction, and Congress can't add to that list by ordinary law. As Marshall read it, Section 13 tried to, so that part of the Judiciary Act was unconstitutional and void.
The reasoning is the part to know. The Constitution is the supreme law, so when a statute conflicts with it, the statute loses, and deciding whether that conflict exists is the courts' job. Marshall wrote that "it is emphatically the province and duty of the judicial department to say what the law is." By giving up a small power it had been handed by statute, the Court claimed a much larger one, and Jefferson had no order to defy.
The Constitution never says outright that courts can strike down laws. Hamilton had argued for that power in Federalist No. 78, and Marbury turned his argument into precedent. That's why the case anchors Topic 2.8: The Judicial Branch, which asks how judicial review lets the courts check the other branches. It also illustrates checks and balances in Topic 1.6, and judicial review is what the judicial activism vs. judicial restraint debate in Topic 2.11 is about.
What a strong Marbury answer looks like on the free-response
Marbury is a required case, so it can be the required half of Question 3 (SCOTUS Comparison). A strong answer gives the facts in a sentence, states the holding (part of the Judiciary Act of 1789 was unconstitutional), and names the principle (judicial review). Then it connects the non-required case to Marbury. If the new case has the Court striking down a law or an executive action, explain that the Court is using the power Marbury established. Writing only "Marbury established judicial review" without explaining what that power does usually won't earn the comparison point.
For Question 4 (Argument Essay), Marbury pairs naturally with Federalist No. 78 on prompts about judicial power, judicial independence, or whether life tenure gives the Court too much power. If you argue the Court is too powerful, Marbury shows the Court gave itself a power the text never lists. A rebuttal can point to the checks in Topic 2.11: Congress can pass new laws or propose amendments, presidents and senators shape the Court through appointments, and states and executives can delay carrying out a ruling.
Multiple-choice questions often describe a scenario and ask which principle it shows. A court striking down a presidential executive order, or a federal court voiding a state law under the First Amendment, are both judicial review in action. Judicial review now reaches executive actions and state laws, too. Martin v. Hunter's Lessee (1816) confirmed the Supreme Court's authority to review state court decisions on federal questions.
Judicial review vs. Article III job protections, and Marbury vs. McCulloch
One mix-up is treating judicial review and judicial independence as the same thing. Article III gives judges independence through service "during good behaviour" (life tenure) and salaries that can't be cut while they serve. Those protections are written in the Constitution. Judicial review is a power, and it comes from Marbury's reasoning rather than from Article III's text. Independence is what lets judges use that power on unpopular rulings without fear of losing their jobs, which is the link Topic 2.10 asks you to explain.
Another mix-up is with McCulloch v. Maryland (1819), another Marshall Court case. Marbury is about the relationship among the branches: courts checking Congress and the president. McCulloch is about federalism: it used the Necessary and Proper Clause and the Supremacy Clause to uphold a national bank and block a state from taxing it.
Marbury did not get his job. Answer choices sometimes say the Court ordered Madison to deliver the commission. It didn't. The Court said it lacked the power to issue that order.
Where this sits in AP® Gov
- Unit 2: Interactions Among Branches of Government (about 25–36% of the multiple-choice section)
- Topic 1.6: Principles of American Government Study guide →
- Topic 2.8: The Judicial Branch Study guide →
- Topic 2.10: The Court in Action Study guide →
- Topic 2.11: Checks on the Judicial Branch Study guide →
- Topic 2.9: Legitimacy of the Judicial Branch Study guide →
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