Federalism in AP Government power shared between nation and states.
Federalism is the division of power between a national government and state governments. This federalism AP Gov definition guide covers the types of power, the key clauses, and how the AP exam tests the balance between the two levels.
What is federalism?
Federalism is a system in which power is divided between a central national government and regional state governments, with each holding authority the other cannot simply remove. The framers chose federalism as a compromise between a strong central government and powerful independent states. Both levels act directly on citizens, which sets federalism apart from a confederation.
Types of power
How the balance shifts
The relationship has moved over time. Dual federalism, sometimes called layer-cake federalism, kept national and state powers separate. Cooperative federalism, the marble-cake model, blends them through shared programs. The national government often shapes state policy through grants. Categorical grants come with strict conditions, while block grants give states more freedom.
Key clauses to know
The necessary and proper clause, also called the elastic clause, lets Congress stretch its enumerated powers. The supremacy clause makes valid national law override conflicting state law. The commerce clause has been read broadly to justify national regulation. These clauses, together with the Tenth Amendment, are the battleground for most federalism questions.
How AP Gov tests federalism
Multiple-choice questions often give a scenario and ask which level holds the power or which clause applies. Free-response questions may ask how a clause or a grant shifts power toward the national government or back to the states. Name the specific clause or power type rather than speaking in general terms.
Frequently asked questions
Quick answers — written by humans, not a chatbot.
What is the difference between reserved and concurrent powers?
Reserved powers belong only to the states under the Tenth Amendment, such as running elections. Concurrent powers are shared by both the national and state governments, such as the power to tax.
How does the supremacy clause relate to federalism?
The supremacy clause makes the Constitution and valid national laws the highest law of the land. When a state law conflicts with a valid national law, the national law wins. That clause sits at the center of disputes over the balance of power.
What is the difference between categorical and block grants?
Categorical grants give states money for a narrow purpose with strict conditions. Block grants give money for a broad area with fewer strings, leaving states more discretion. Block grants shift power toward the states.