Unit 1 FRQ Practice — SCOTUS Comparison
Master the AP Gov SCOTUS Comparison FRQ by comparing United States v. Lopez (1995) to Gonzales v. Raich (2005) using the official 4-point rubric.
What you'll do in this lesson
A voice-first session with the Crimsora tutor on Unit 1 FRQ Practice — SCOTUS Comparison, then targeted practice and FRQs — with the tutor adapting to where you get stuck.
What this lesson covers
The SCOTUS Comparison is one of four free-response questions on the AP US Government exam, and it always pairs one of the fifteen required Supreme Court cases with a case you have never seen. Unit 1's federalism content makes United States v. Lopez a natural anchor, and the Commerce Clause dispute in Gonzales v. Raich is a perfect nonrequired partner.
This lesson walks you through a complete, rubric-scored response: identifying the shared clause, tracing facts to holding in the required case, contrasting the two Courts' reasoning, and explaining how the second case reshapes federal-state power. Learn to earn all four points cleanly and quickly.
This lesson walks you through a complete, rubric-scored response: identifying the shared clause, tracing facts to holding in the required case, contrasting the two Courts' reasoning, and explaining how the second case reshapes federal-state power. Learn to earn all four points cleanly and quickly.
How the SCOTUS Comparison FRQ Is Built
Every SCOTUS Comparison question follows the same four-part skeleton, and each part is worth exactly one point. You are given a short description of a nonrequired case (here, Gonzales v. Raich) and asked to connect it to a required case (here, United States v. Lopez) that you must know from memory.
The four tasks are predictable:
A common misconception is that you must summarize both cases fully. You do not. The reader is scanning for the specific move each part demands. Write four tight, labeled paragraphs (A, B, C, D). Do not waste time on an introduction or conclusion — there is no essay structure and no thesis point available here.
The four tasks are predictable:
| Part | Task | What earns the point |
|---|---|---|
| A | Identify a constitutional provision common to both cases | Name the specific clause both cases turn on |
| B | Explain how the facts of the required case led to its holding | Link a concrete fact to the ruling |
| C | Explain how the reasoning of the two cases differs | Contrast the logic, not just the outcomes |
| D | Describe an interaction between the nonrequired case's holding and a political principle, institution, or behavior | Show a real-world or power consequence |
The Required Case: United States v. Lopez (1995)
You must be able to reproduce Lopez without prompting. Alfonso Lopez, a Texas high-school senior, carried a concealed handgun to school. He was charged under the federal Gun-Free School Zones Act of 1990, which made it a federal crime to possess a firearm in a school zone. Congress justified the law under the Commerce Clause of Article I, Section 8, which gives Congress power to regulate commerce among the states.
The Supreme Court ruled 5–4 that Congress had exceeded its Commerce Clause authority. The Court's reasoning turned on one decisive fact: possessing a gun in a school zone is not an economic activity, and it has no substantial effect on interstate commerce. Because the statute regulated purely local, noncommercial conduct, upholding it would have let Congress regulate almost anything.
For Part B, you must connect a fact to the holding, not just state the holding. A point-earning sentence looks like this: because Lopez's conduct — simple gun possession near a school — was noneconomic and did not substantially affect interstate commerce, the Court held the federal law unconstitutional as an overreach of the Commerce Clause. Lopez matters historically because it was the first case in decades to strike down a federal law for exceeding the commerce power, signaling a limit on congressional reach.
The Supreme Court ruled 5–4 that Congress had exceeded its Commerce Clause authority. The Court's reasoning turned on one decisive fact: possessing a gun in a school zone is not an economic activity, and it has no substantial effect on interstate commerce. Because the statute regulated purely local, noncommercial conduct, upholding it would have let Congress regulate almost anything.
For Part B, you must connect a fact to the holding, not just state the holding. A point-earning sentence looks like this: because Lopez's conduct — simple gun possession near a school — was noneconomic and did not substantially affect interstate commerce, the Court held the federal law unconstitutional as an overreach of the Commerce Clause. Lopez matters historically because it was the first case in decades to strike down a federal law for exceeding the commerce power, signaling a limit on congressional reach.
The Nonrequired Case and the Reasoning Contrast
In Gonzales v. Raich (2005), California's Compassionate Use Act allowed patients to grow and use marijuana for medical purposes. Angel Raich grew marijuana at home for her own medical use, but federal agents seized her plants under the Controlled Substances Act. The question was whether Congress could regulate homegrown marijuana never sold or moved across state lines.
The Court ruled that Congress could. Even though Raich's marijuana was local and noncommercial, the Court applied the aggregation principle: if many people grow marijuana at home, the cumulative effect substantially affects the national market that Congress is regulating. Homegrown marijuana could be diverted into interstate commerce or displace market demand.
For Part C, contrast the logic. In Lopez, the Court found the regulated activity noneconomic with no substantial effect on interstate commerce, so it limited federal power. In Raich, the Court found that the activity, though local, was part of a broader economic scheme whose aggregate effect substantially affected interstate commerce, so it upheld federal power. The pivot is whether the activity is economic and whether its aggregate effect is substantial.
The Court ruled that Congress could. Even though Raich's marijuana was local and noncommercial, the Court applied the aggregation principle: if many people grow marijuana at home, the cumulative effect substantially affects the national market that Congress is regulating. Homegrown marijuana could be diverted into interstate commerce or displace market demand.
For Part C, contrast the logic. In Lopez, the Court found the regulated activity noneconomic with no substantial effect on interstate commerce, so it limited federal power. In Raich, the Court found that the activity, though local, was part of a broader economic scheme whose aggregate effect substantially affected interstate commerce, so it upheld federal power. The pivot is whether the activity is economic and whether its aggregate effect is substantial.
| Lopez (1995) | Raich (2005) | |
|---|---|---|
| Activity | Gun possession | Growing marijuana |
| Economic? | No | Yes (a commodity) |
| Aggregate effect | Not substantial | Substantial |
| Result | Federal law struck down | Federal law upheld |
Part D: Effect on Federal-State Power
Part D asks you to link Raich's holding to a broader principle — here, the balance of power between the national government and the states. The key insight: Raich expanded, or at least reaffirmed, federal supremacy over state policy choices even in traditionally local matters.
By upholding the Controlled Substances Act against California's medical-marijuana law, the Court allowed federal law to override a state's own public-health policy. Under the Supremacy Clause, the federal statute prevailed, meaning states could not shield residents from federal enforcement simply by legalizing conduct at the state level. This limited state autonomy and demonstrated that the Commerce Clause still grants Congress wide reach over local activity connected to a national regulatory scheme.
A strong Part D answer names a concrete consequence: after Raich, states that legalized marijuana still faced possible federal prosecution because federal power under the Commerce Clause trumped conflicting state law. That tension between state legalization and federal prohibition is the exact federal-state interaction the rubric rewards.
Avoid the common trap of merely restating the holding. The point requires an effect — how the ruling shapes the distribution of power, a policy outcome, or the behavior of states or citizens. Tie your sentence explicitly to federalism or the balance of national versus state authority to secure the point.
By upholding the Controlled Substances Act against California's medical-marijuana law, the Court allowed federal law to override a state's own public-health policy. Under the Supremacy Clause, the federal statute prevailed, meaning states could not shield residents from federal enforcement simply by legalizing conduct at the state level. This limited state autonomy and demonstrated that the Commerce Clause still grants Congress wide reach over local activity connected to a national regulatory scheme.
A strong Part D answer names a concrete consequence: after Raich, states that legalized marijuana still faced possible federal prosecution because federal power under the Commerce Clause trumped conflicting state law. That tension between state legalization and federal prohibition is the exact federal-state interaction the rubric rewards.
Avoid the common trap of merely restating the holding. The point requires an effect — how the ruling shapes the distribution of power, a policy outcome, or the behavior of states or citizens. Tie your sentence explicitly to federalism or the balance of national versus state authority to secure the point.
A Point-Earning Writing Strategy
Label each response A, B, C, and D so the reader can find every point instantly. Answer in complete sentences; the SCOTUS Comparison is not scored on style, but incomplete fragments risk losing the point.
Use this checklist as you write. For A, name the exact clause — the Commerce Clause — not just "Article I" or "federal power." For B, use the words "because" and "led to" to force a fact-to-holding link. For C, use a contrast signal like "whereas" or "in contrast" and describe the reasoning of both cases, since a comparison of only one earns nothing. For D, state a consequence for federal-state power using a verb like "expanded," "limited," or "overrode."
Budget about twenty minutes for this FRQ. You do not need outside examples the way the Argument Essay does, and you should not analyze data as in the Quantitative Analysis. Precision and directness win the four points.
Use this checklist as you write. For A, name the exact clause — the Commerce Clause — not just "Article I" or "federal power." For B, use the words "because" and "led to" to force a fact-to-holding link. For C, use a contrast signal like "whereas" or "in contrast" and describe the reasoning of both cases, since a comparison of only one earns nothing. For D, state a consequence for federal-state power using a verb like "expanded," "limited," or "overrode."
| Part | Danger | Fix |
|---|---|---|
| A | Naming a vague provision | Name the Commerce Clause specifically |
| B | Stating holding only | Connect a fact to the outcome |
| C | Describing one case only | Contrast both sides' reasoning |
| D | Restating the holding | Name a power or policy effect |
Key terms
- Commerce Clause.
- The provision in Article I, Section 8 giving Congress power to regulate commerce among the states; the shared constitutional basis of both Lopez and Raich.
- United States v. Lopez (1995).
- Required case holding that the Gun-Free School Zones Act exceeded Congress's Commerce Clause power because gun possession near schools is noneconomic and lacks a substantial effect on interstate commerce.
- Gonzales v. Raich (2005).
- Nonrequired case holding that Congress could regulate homegrown medical marijuana under the Commerce Clause because its aggregate effect substantially affects the national market.
- Aggregation principle.
- The idea that individually small, local activities can, when added together, substantially affect interstate commerce and thus fall under federal regulation.
- Substantial effects test.
- The standard asking whether an activity substantially affects interstate commerce; the pivot that distinguished the outcomes in Lopez and Raich.
- Supremacy Clause.
- Article VI provision making valid federal law supreme over conflicting state law, the mechanism by which Raich's holding overrode California's medical-marijuana policy.
- SCOTUS Comparison FRQ.
- An AP Gov free-response question pairing a required Supreme Court case with a nonrequired one, scored on a four-point rubric of one point per part.
Worked example
In Gonzales v. Raich (2005), the Supreme Court upheld the federal Controlled Substances Act against a challenge from California patients who grew marijuana at home for medical use, ruling that Congress could regulate this local activity. Using this information and your knowledge of United States v. Lopez (1995), respond to the following. (A) Identify the constitutional clause common to both cases. (B) Explain how the facts of Lopez led to the holding in that case. (C) Explain how the reasoning in Raich differs from the reasoning in Lopez. (D) Explain how the holding in Raich affects the balance of power between the federal government and the states.
Part A: Both cases turn on the Commerce Clause of Article I, Section 8, which gives Congress power to regulate commerce among the states. Naming the clause specifically secures the point.
Part B: In Lopez, Alfonso Lopez was charged under the Gun-Free School Zones Act for carrying a gun into a school. Because possessing a gun in a school zone is a noneconomic activity that does not substantially affect interstate commerce, the Court held that Congress had exceeded its Commerce Clause authority and struck down the law. The phrase 'because ... the Court held' links fact to holding.
Part C: In Lopez the Court reasoned that the regulated activity was noneconomic and lacked a substantial effect on interstate commerce, so federal power was limited. In contrast, in Raich the Court reasoned that growing marijuana is economic and that, through aggregation, homegrown marijuana substantially affects the interstate market, so federal power was upheld. The contrast is the difference in outcome logic.
Part D: By upholding federal law over California's medical-marijuana statute, Raich expanded federal authority at the expense of state policy autonomy. Under the Supremacy Clause, states that legalized marijuana still could not protect residents from federal enforcement, shifting power toward the national government. This names a concrete federal-state consequence.
Part B: In Lopez, Alfonso Lopez was charged under the Gun-Free School Zones Act for carrying a gun into a school. Because possessing a gun in a school zone is a noneconomic activity that does not substantially affect interstate commerce, the Court held that Congress had exceeded its Commerce Clause authority and struck down the law. The phrase 'because ... the Court held' links fact to holding.
Part C: In Lopez the Court reasoned that the regulated activity was noneconomic and lacked a substantial effect on interstate commerce, so federal power was limited. In contrast, in Raich the Court reasoned that growing marijuana is economic and that, through aggregation, homegrown marijuana substantially affects the interstate market, so federal power was upheld. The contrast is the difference in outcome logic.
Part D: By upholding federal law over California's medical-marijuana statute, Raich expanded federal authority at the expense of state policy autonomy. Under the Supremacy Clause, states that legalized marijuana still could not protect residents from federal enforcement, shifting power toward the national government. This names a concrete federal-state consequence.
Practice questions
Which statement best explains why the Supreme Court reached opposite conclusions in United States v. Lopez (1995) and Gonzales v. Raich (2005)?
- Lopez involved a state law while Raich involved a federal law
- In Lopez the regulated activity was noneconomic, while in Raich the activity was economic and had a substantial aggregate effect on interstate commerce
- Lopez was decided under the Supremacy Clause and Raich under the Commerce Clause
- The Court in Raich ignored the Commerce Clause entirely
Answer: In Lopez the regulated activity was noneconomic, while in Raich the activity was economic and had a substantial aggregate effect on interstate commerce
Both cases rest on the Commerce Clause, so the difference lies in the nature of the activity. Gun possession in Lopez was noneconomic with no substantial effect, so the law fell. Marijuana cultivation in Raich was economic and, aggregated, substantially affected the interstate market, so the law was upheld.
Explain how the holding in Gonzales v. Raich affects the relationship between federal and state power, and identify the constitutional principle that makes that effect possible.
Answer: Raich expanded federal power over state policy by allowing the federal Controlled Substances Act to override California's medical-marijuana law; the Supremacy Clause makes valid federal law prevail over conflicting state law.
A full-credit answer names a power consequence (federal authority over local activity expands, limiting state autonomy) and connects it to a mechanism. Because federal law is supreme under Article VI, states legalizing marijuana could not block federal enforcement, tilting the federal-state balance toward the national government.
In a SCOTUS Comparison FRQ, a student writes for Part C: 'In Raich the Court said Congress could regulate marijuana because it affects interstate commerce.' Why would this response likely fail to earn the point?
Answer: It describes only Raich and does not contrast that reasoning with the reasoning in Lopez.
Part C requires a comparison of reasoning across both cases. Describing one case's logic alone does not show a difference. The student needed to add that in Lopez the Court found the activity noneconomic with no substantial effect, whereas in Raich the aggregate economic effect justified federal regulation.
FAQ
- Do I have to know the year and vote count of the cases for the SCOTUS Comparison FRQ?
- No. The rubric rewards the constitutional clause, the facts, the reasoning, and the holdings, not dates or vote margins. Focus on why the Court ruled as it did rather than memorizing numbers.
- Is the Commerce Clause always the answer for Part A?
- Only when both cases actually turn on it, as Lopez and Raich do. Always match the clause to what the cases dispute. If a comparison paired a different required case, the shared provision could be the Equal Protection Clause, the First Amendment, or another provision.
- How is the SCOTUS Comparison different from the Concept Application FRQ?
- The SCOTUS Comparison pairs a required Supreme Court case with a new one and asks you to compare clauses, facts, reasoning, and holdings. The Concept Application gives a scenario and asks you to apply course concepts, with no required case knowledge needed.
- What is the fastest way to lose points on this FRQ?
- Restating a holding when the part asks for an effect, describing only one case in the comparison part, or naming a vague provision instead of the specific clause. Label each part A through D and answer exactly what is asked.
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