Judicial Review
Why it Matters
The Constitution never says that a court may refuse to enforce an act of Congress. Chief Justice Marshall said it anyway in 1803, in an opinion that denied Marbury the writ he came for and claimed for the judiciary the power to say what the Constitution means. Nearly every case in this course runs through that power, whether Congress passed the law, the President issued the order, or a state wrote the rule. The harder question is what limits it, because a court that can void a statute is a court the other branches have reason to resist. This activity traces the argument back to its source and tests it against the objections.
Current Context
On June 30, 2026, the Court in Trump v. Barbara (opens in a new tab) struck down Executive Order 14160. It held that children born in the United States to parents unlawfully or temporarily present are citizens at birth under the Fourteenth Amendment’s Citizenship Clause. Chief Justice Roberts wrote for a divided Court, and Justice Kavanaugh reached the same result on statutory grounds. The National Constitution Center’s coverage (opens in a new tab) walks through the opinions, and the National Immigration Forum’s explainer (opens in a new tab) maps the practical effects. An Article III court nullified a sitting President’s executive order and the order fell, which is Marbury’s premise at full strength 223 years after Marshall asserted it.
Key Concepts
Judicial Review
The power of courts to decide whether a law or a government action is constitutional. The Constitution’s text never grants it in so many words, which is why Marbury’s argument for it carries so much weight.
Marbury v. Madison
The 1803 case in which Chief Justice Marshall established judicial review while refusing the writ Marbury had come for. Marshall claimed the larger power in the course of declining the smaller one, so the opinion is studied as strategy as well as reasoning.
Justiciability
The set of doctrines, including standing, ripeness, and mootness, that decide whether a court may hear a case at all. They grow out of Article III’s limit to cases and controversies, and they are where the judiciary marks the edge of its own power.
Judicial Supremacy
The view that the Supreme Court’s reading of the Constitution binds the other branches and the states. Cooper v. Aaron is its strongest statement. The Court there called the federal judiciary “supreme in the exposition of the law of the Constitution,” and held its reading of the Fourteenth Amendment binding on the states.
Departmentalism
The competing view that each branch reads the Constitution for itself within its own sphere, so a court’s judgment binds the parties before it without settling the question for everyone else. The tension shows up whenever a President or a state resists a court order.
Resources
- US Constitution (Constitution Annotated) (opens in a new tab) (Article III is the starting point: read what it grants the judicial power to do, and notice that voiding a statute is never mentioned.)
- Marbury v. Madison, 5 U.S. (1 Cranch) 137 (1803) (opens in a new tab) (The origin of judicial review; read Marshall’s reasoning directly rather than through summaries.)
- Federalist No. 78 (Alexander Hamilton) (opens in a new tab) (Hamilton’s defense of judicial independence and of courts interpreting the Constitution, written before Marbury made it law.)
- Cooper v. Aaron, 358 U.S. 1 (1958) (opens in a new tab) (Reaffirms that Supreme Court interpretations of the Constitution bind the states; the high-water mark of judicial supremacy.)
- United States v. Nixon, 418 U.S. 683 (1974) (opens in a new tab) (Judicial review in action as a check on the President himself.)
- Kevin C. Walsh, Originalist Law Reform, Judicial Departmentalism, and Justice Scalia, 84 U. Chi. L. Rev. 2311 (2017) (opens in a new tab) (A modern scholarly case for departmentalism, for the debate in Part 3.)
- Robert Post & Reva Siegel, Popular Constitutionalism, Departmentalism, and Judicial Supremacy, 92 Calif. L. Rev. 1027 (2004) (opens in a new tab) (The other side of the scholarly debate over who gets the final word.)
What to Do
Judicial review has an origin story and a live argument about its limits. This activity works on both, using AI to take Marbury apart, trace the power into later cases, and weigh the claim that the Court does not get the last word. Check what the model tells you against the opinions in Resources, because that habit is the skill this builds.
Part 1: Analyze the Origins
Use the Case Reasoning Tutor to break down Marbury v. Madison, with attention to how Marshall establishes judicial review as law and as strategy. Then run the Marbury Logic Auditor and check its reconstruction of Marshall’s argument against the opinion itself at the Google Scholar link. Read Federalist No. 78 alongside that work, since Hamilton defended the judicial role in 1788, fifteen years before any court claimed the power.
Part 2: Explore Its Use and Reach
Pick one or two cases in which a court used judicial review against the executive or the legislature: Cooper v. Aaron, United States v. Nixon, or another of your choice. Run them through the Case Reasoning Tutor to see how a court asserts the power in practice and how the other branches answer. Verify each holding against the opinion before you rely on it.
Part 3: Debate the Boundaries
Use the Modern Controversy Tracker to work through the live argument between judicial supremacy and departmentalism. Ask it to find a current controversy, such as executive resistance to a court order or state defiance, and to explain how that controversy tests the limits of judicial power. Read enough of the Walsh and Post & Siegel articles to judge whether the model’s account of the two positions is fair.
Part 4: Write Your Post
Write a 400–600 word post on what you found. Say what you learned about the power and its limits, which case or moment stood out and why, and whether you think courts should have the final say on constitutional questions. Include two AI excerpts, one from the Case Reasoning Tutor and one from the Modern Controversy Tracker, with a short note on how useful each was.
Part 5: Share Chat Link
Include one AI chat link with a 1–2 sentence explanation of what the conversation shows and why you chose to share it.
Suggested AI Prompts
Use these prompts as a starting point, then adjust them to fit your goal. Strong prompting develops through trial, revision, and testing. It’s a foundational skill that grows into more advanced AI work such as context engineering and agent-based workflows.
The Case Reasoning Tutor
You are a constitutional law tutor helping me understand the principle of judicial review. Start by asking me for a case name. Then explain how the case establishes or uses judicial review. Walk through the facts, reasoning, opinions, and lasting significance in clear, structured steps. Make sure to highlight how the court justified its authority to interpret the Constitution, and distinguish clearly between what the opinion actually holds and what later cases or commentators have made of it.
Role assignment plus a fixed sequence keeps the explanation on the reasoning instead of the trivia. The closing instruction, which separates what the opinion held from what it is famous for, targets the most common error in AI case summaries.
The Marbury Logic Auditor
You are a legal logician. Reconstruct Chief Justice Marshall’s argument for judicial review in Marbury v. Madison as a numbered chain of premises leading to the conclusion that courts may refuse to enforce unconstitutional statutes. For each premise, note whether it comes from the Constitution’s text, from the nature of written constitutions, or from the judicial function. Then identify the single premise you consider most vulnerable to attack and present the strongest historical or logical objection to it, drawing on the departmentalist tradition where relevant. Flag any step where you are uncertain whether Marshall actually made the argument or whether it is a later reconstruction, so I can verify against the opinion itself.
Numbering the premises exposes a skeleton that flowing prose conceals, and asking for the weakest link pushes the model past summary into evaluation. The uncertainty flag builds the verification in, so you confirm the reconstruction against the opinion instead of trusting the model’s memory of it.
The Modern Controversy Tracker
You are an AI researcher tasked with connecting judicial review to today’s constitutional debates. Start by asking me for a historical case (for example Marbury, Cooper, or Nixon). Then use current sources from your web search tool to show how that principle is being tested or challenged today, such as executive resistance to court orders, state defiance of federal rulings, or proposals to limit the courts. Explain the controversy, the connection to the historical case, and why it matters to the balance of powers as of today. Present the judicial supremacy and departmentalist readings of the controversy side by side rather than picking a winner, and cite your sources so I can verify the events actually occurred as described.
Requiring live search and citations keeps the model out of its weakest zone, which is recent events recalled from memory. Asking for both readings side by side counteracts the pull toward one confident answer on a contested question, and you should still verify a cited source before you use the material.