Marbury v. Madison
The Supreme Court ruled that it had no power to order the government to deliver William Marbury's judicial appointment, because the law purporting to give the Court that power conflicted with the Constitution and was therefore void.
In reaching that conclusion, the Court established the foundational principle of American constitutional law — judicial review — declaring that when an act of Congress conflicts with the Constitution, the Constitution prevails and courts have both the power and the duty to say so.
“It is emphatically the province and duty of the judicial department to say what the law is. Those who apply the use to particular cases, must of necessity expound and interpret that rule.”
The Court's declaration that interpreting the law — including the Constitution — is the judiciary's core and exclusive function.
Why this is a landmark case
Marbury v. Madison is the foundation of American constitutional law because it established judicial review: the power of federal courts to declare an act of Congress unconstitutional and refuse to enforce it. Chief Justice John Marshall faced a political trap—if the Court ordered the Jefferson administration to deliver William Marbury's judicial commission, the order would likely be ignored, exposing the Court's weakness—and turned it into a lasting assertion of judicial authority. He held that although Marbury was entitled to his commission, the section of the Judiciary Act of 1789 he relied on for relief unconstitutionally expanded the Court's original jurisdiction beyond what Article III allows, so the Court could not act.
The case's enduring importance lies not in its result but in Marshall's declaration that 'it is emphatically the province and duty of the judicial department to say what the law is.' That principle made the judiciary a co-equal branch and the ultimate arbiter of the Constitution's meaning. Virtually every later constitutional decision—from Brown v. Board of Education to modern rulings striking down federal statutes—rests on the authority Marbury claimed. It remains the single most cited case for the proposition that courts, not Congress or the President, have the final word on what the Constitution permits.
The Case in Depth
What happened
Outgoing President John Adams appointed William Marbury to be a justice of the peace for Washington County in the District of Columbia in the final days of his administration. The formal appointment document (the commission) was signed and sealed but never delivered before the new Jefferson administration took office. The new Secretary of State, James Madison, refused to hand over the commission, and Marbury asked the Supreme Court to order him to do so.
The question before the Court
Can the Supreme Court strike down an act of Congress that conflicts with the Constitution, even if doing so means it cannot help someone with a legitimate legal claim?
The Court's answer
Yes — the Constitution is the supreme law of the land, and when an act of Congress conflicts with it, courts must follow the Constitution and treat the conflicting law as void, even when that means a deserving party goes without relief.
The Court found that Marbury had a genuine legal right to his appointment: the commission was complete the moment President Adams signed it, and withholding the document violated that legal right. A court order directing the Secretary of State to deliver it would ordinarily be the proper remedy. But the provision of the Judiciary Act of 1789 that gave the Supreme Court the power to issue such orders directly to government officers improperly expanded the Court's original jurisdiction — the cases it can hear for the first time without going through a lower court first — beyond the limits Article III of the Constitution sets. Because no act of Congress can override the Constitution, that provision was void, and this Court therefore lacked the authority to grant Marbury the relief he deserved.
Curious how the Court got there? See the step-by-step legal reasoning →
How the Court got there
The legal reasoning, step by step
- The Court first resolved whether Marbury had any legal right to the commission at all. Under the Constitution's Appointments Clause, a federal appointment is made by the President alone and is complete — legally effective — when the President signs the commission. Affixing the government seal by the Secretary of State is a purely ministerial follow-on step prescribed by law, not a precondition for the appointment itself. Neither delivery of the document to Marbury nor his acceptance of it was necessary. The appointment was therefore fully made and legally irrevocable.
- Because the appointment conferred a legal right that could not be undone, the Court turned to whether the law offered Marbury any remedy. The Court stated the foundational principle that in a government of laws — not of men — every legal right must have a legal remedy. Withholding a completed commission from someone holding a non-discretionary, fixed-term office is not a political act shielded from judicial scrutiny; it is a ministerial duty imposed by law, and the injury to the rights-holder is the kind courts exist to address.
- The Court then distinguished between two types of executive action. When the President or a cabinet official exercises genuine political discretion — matters the Constitution commits to the executive branch — courts have no role in second-guessing those choices. But when the law imposes a specific, non-discretionary duty and an individual's rights depend on its performance, that duty is enforceable by courts. Delivering a sealed and signed commission falls into the second category: the Secretary of State was acting as an officer of the law, not an agent of presidential will.
- The appropriate legal tool for forcing a government officer to perform a specific, non-discretionary duty is a writ of mandamus — a court command to do a particular thing the law requires. Section 13 of the Judiciary Act of 1789 appeared to authorize the Supreme Court to issue such writs to government officers, and the Secretary of State is squarely within its terms. So the Court had to decide whether that statute was itself valid.
- Article III of the Constitution defines the Supreme Court's original jurisdiction — the category of cases the Court can hear directly, without a prior lower-court proceeding — as limited to cases involving ambassadors, other public ministers, consuls, and states as parties. Marbury's case fits none of those categories. The Constitution's enumeration of original jurisdiction cases carries a negative implication: Congress cannot add to that list, because to do so would render the Constitution's careful distribution of judicial power meaningless.
- When a statute conflicts with the Constitution, the Constitution must prevail — this is the principle of judicial review. Courts are charged with saying what the law is, and if applying a statute would require ignoring the Constitution's plain command, courts must follow the Constitution instead. Section 13's grant of original mandamus jurisdiction to the Supreme Court contradicted Article III, making that provision unconstitutional and void. The Court therefore had no lawful power to issue the writ, and Marbury's application had to be denied.