Landmark Court Cases Inquiry

Each case comes with tons of visuals, videos, and information so students can learn about its constitutional connection, key facts, constitutional questions, holding, impact of case, connection to other cases, and critical questions. Each case includes a lesson, graphic organizer, and a completed rubric for teachers.

CLICK ON THE THUMBNAIL BELOW TO LEARN ABOUT EACH OF THE 14 LANDMARK SUPREME COURT CASES



Landmark Cases Rubric

Complete this graphic organizer for each case of the fourteen required landmark Supreme Court Cases.

Rank the Landmark Cases

They’re all important (that’s why we call them landmark cases), but which ones stand out at the tip top of all court cases?

Constitutional Connection

What’s the constitutional connection to each case?

Constitutional Speculation

Imagine the current Supreme Court reheard the 14 landmark cases. How would they rule, and why?

Landmark Court Case Project

Use our engaging Landmark Case project to make your court case knowledge stick

Interactive Court Cases Timeline

All the landmark Supreme Court cases in a row with essential knowledge and links.

High Five AP Government & Politics Exam Review Updated for 2025
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High Five AP Government & Politics Exam Review Updated for 2025

Prepare for the 2025 AP® US Government Exam with High Five! Our Exam Review guide is completely redesigned and updated with over 140 pages of great AP Exam review material. Tons of completed graphic organizers are full of information to get you exam-ready in a flash.

This 2025 exam guide is an instant download and contains all the following resources.

  • Overview of the U.S. Government and Politics exam. 

  • Completed graphic organizers for all required documents + Supreme Court cases. 

  • Guide to the skills and content for all 5 course units. 

  • Essential vocabulary with link to online glossary.

  • Tons of Graphic Organizers with answers from each course unit.

  • GoPo Pro Tips.

  • Exam review Guides.

  • Amazing AI generated images of the Framers of the Constitution giving high fives!

  • Full Length AP multiple choice + Free Response Exam with Key.

AP ® is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this site or product.

GoPoPro does not offer credit or grades for our classes or products.

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Inquiry Learning Jonathan Milner Inquiry Learning Jonathan Milner

United States v. Lopez (1995)

Constitutional Connection

Commerce Clause - The Congress shall have Power To regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes;

U.S. v. Lopez (1995) was a landmark case of the United States Supreme Court concerning the Commerce Clause. It was the first case since 1937 in which the Court held that Congress had exceeded its power to legislate under the Commerce Clause.


Key Facts

Alfonzo Lopez, a 12th grade high school student, carried a concealed weapon into his San Antonio, Texas high school. He was charged under Texas law with firearm possession on school premises. The next day, the state charges were dismissed after federal agents charged Lopez with violating a federal criminal statute, the Gun-Free School Zones Act of 1990. The act forbids "any individual knowingly to possess a firearm at a place that [he] knows...is a school zone." Lopez was found guilty following a bench trial and sentenced to six months' imprisonment and two years' supervised release.

In McCulloch v. Maryland (1819), the Supreme Court ruled that federal laws had supremacy, or authority, over state laws. But what happens if Congress passes a law that it does not have the right to pass? Does that law still have authority over a state law? The decision in United States v. Lopez wrestled with that question.


Big Question

Is the 1990 Gun-Free School Zones Act, forbidding individuals from knowingly carrying a gun in a school zone, unconstitutional because it exceeds the power of Congress to legislate under the Commerce Clause?


To regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes;
— The Commerce Clause in its entirety

Holding

5-4. Yes. The possession of a gun in a local school zone is not an economic activity that might, through repetition elsewhere, have a substantial effect on interstate commerce. The law is a criminal statute that has nothing to do with "commerce" or any sort of economic activity.


Impact of case

US v. Lopez preserved the system of federalism, which delegates certain powers to states and certain powers to the federal government. It upheld the principle that states have control of local issues, like gun possession on school grounds.

The case was the first in a long time that stated the federal government had overstepped its bounds and that Congress had given itself too much power under the commerce clause. United States v. Lopez reaffirmed the balance of power between the federal government and state governments.

U.S. v. Lopez is a particularly significant case because it marked the first time in half a century that the Court held Congress had overstepped its power under the Commerce Clause.


The possession of a gun in a local school zone is in no sense an economic activity that might, through repetition elsewhere, substantially affect any sort of interstate commerce. Respondent was a local student at a local school; there is no indication that he had recently moved in interstate commerce, and there is no requirement that his possession of the firearm have any concrete tie to interstate commerce.”

“To uphold the Government’s contentions here, we would have to pile inference upon inference in a manner that would bid fair to convert congressional authority under the Commerce Clause to a general police power of the sort retained by the States.
— Chief Justice William Rehnquist

Connections

U.S. v. Lopez (1995) is still cited in cases regarding the limits of the Commerce Clause. Here's a list of landmark Supreme Court cases dealing with the Commerce Clause.


Fun Facts

High Five AP Government & Politics Exam Review Updated for 2025

Prepare for the 2025 AP® US Government Exam with High Five! Our Exam Review guide is completely redesigned and updated with over 140 pages of great AP Exam review material. Tons of completed graphic organizers are full of information to get you exam-ready in a flash.

This 2025 exam guide is an instant download and contains all the following resources.

  • Overview of the U.S. Government and Politics exam. 

  • Completed graphic organizers for all required documents + Supreme Court cases. 

  • Guide to the skills and content for all 5 course units. 

  • Essential vocabulary with link to online glossary.

  • Tons of Graphic Organizers with answers from each course unit.

  • GoPo Pro Tips.

  • Exam review Guides.

  • Amazing AI generated images of the Framers of the Constitution giving high fives!

  • Full Length AP multiple choice + Free Response Exam with Key.

AP ® is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this site or product.

GoPoPro does not offer credit or grades for our classes or products.

BUY NOW
  • After a half century of the expansion of federal power, the SCOTUS set a limit on Congress' use of the Commerce Clause.

  • 38% of all statistics are made up on the spot.

  • 18 states allow an adult to carry a loaded gun on school grounds.

  • More than a third of the states already allow teachers and other adults to carry guns to school. In most cases, all you need is the equivalent of a note from the principal — you usually don't even need law enforcement approval.

  • Individual packs, which contain one 1.59-ounce serving, contain 30 to 35 candies. M&M's candies are also sold in bulk bags. A 5-pound bag contains approximately 2500 candies, while a 10-pound bag contains approximately 5000 pieces.

  • Here are the 18 states that allow adults to carry loaded weapons onto school grounds with few or minor conditions:

  • Alabama (which bans possessing a weapon on school grounds only if the carrier has "intent to do bodily harm")

  • California (with approval of the superintendent)

  • Connecticut (with approval of "school officials")

  • Hawaii (no specific law)

  • Idaho (with school trustees' approval)

  • Iowa (with "authorization")

  • Kentucky (with school board approval)

  • Massachusetts (with approval of the school board or principal)

  • Mississippi (with school board approval)

  • Montana (with school trustees' permission)

  • New Hampshire (ban applies only to pupils, not adults)

  • New Jersey (with approval from the school's "governing officer")

  • New York (with the school's approval)

  • Oregon (with school board approval)

  • Rhode Island (with a state concealed weapons permit)

  • Texas (with the school's permission)

  • Utah (with approval of the "responsible school administrator")

  • Wyoming (as long as it's not concealed)


Resources


To uphold the Government’s contentions here, we have to pile inference upon inference in a manner that would bid fair to convert congressional authority under the Commerce Clause to a general police power of the sort retained by the States. Admittedly, some of our prior cases have taken long steps down that road, giving great deference to congressional action. The broad language in these opinions has suggested the possibility of additional expansion, but we decline here to proceed any further. To do so would require us to conclude that the Constitution’s enumeration of powers does not presuppose something not enumerated, and that there never will be a distinction between what is truly national and what is truly local. This we are unwilling to do.
— Chief Justice William Rehnquist

Education, although far more than a matter of economics, has long been inextricably intertwined with the Nation’s economy…. guns in the hands of six percent of inner-city high school students and gun-related violence throughout a city’s schools must threaten the trade and commerce that those schools support.
— Justice Stephen Bryer

Critical Questions

  1. Do you believe, like Justice Beyer (see above quote), that the Gun Free School Zone Act of 1990 is constitutional under the Commerce Clause?

  2. What are some things the Commerce Clause has been used to regulate?

  3. What is one consequence of the fact that this case limits, for the first time in a half century, the power of the Congress to use the Commerce Clause?

  4. Read these two different interpretations of the Commerce Clause and explain which one you agree with more.

  5. Do you agree with the Supreme Court's majority ruling in U.S. v. Lopez?

  6. Some would say that the Commerce Clause has been the most powerful weapon in the expansion of the power of the Congress. If you had to list all the weapons in Congress' arsenal, what would you rank as the top five?

  7. Imagine that you wanted a judicial conservative to have to uphold the constitutionality of Gun Free School Zone Act of 1990. Rewrite the Commerce Clause so that it has the power for a judicial conservative to allow Gun Free School Zone Act of 1990.

  8. Here are the words of the Commerce Clause, "To regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes;" Now write a rap, rhyme, song, or limerick about the Commerce Clause.

  9. Write your own opinion for the case of U.S. v. Lopez




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