Federalism is the constitutional division of power between a national government and state governments, where each level has authority the other cannot simply erase. It sits between two rejected alternatives: a unitary system (all power flows from the center) and a confederal system (the states hold real power and the center is weak, like the failed Articles). The Constitution never uses the word "federalism"; instead, a handful of clauses draw the boundary — and most fights over federal power are really fights about what those clauses mean.
A reliable pattern: the Necessary and Proper and Commerce clauses pull power toward Washington; the Tenth Amendment pulls it back to the states; the Supremacy Clause decides who wins a direct conflict.
Early dual federalism is pictured as a layer cake: national and state governments operate in separate spheres, each supreme in its own zone (roughly founding to the 1930s). The Great Depression and New Deal produced cooperative federalism, a marble cake in which the levels are swirled together, sharing funding and administration. Today a single highway, school, or disaster response usually involves federal money, state management, and local execution at once.
[GRAPH: Two stylized cake cross-sections side by side. Left, "Dual (layer cake)": clean horizontal stripes labeled National and State. Right, "Cooperative (marble cake)": the two colors swirled together throughout.]
Fiscal federalism uses federal taxing and spending to influence the states. The main tool is grants-in-aid:
| Tool | What it is | Effect |
|---|---|---|
| Categorical grant | Money for a narrow, specific purpose with detailed federal conditions | Maximum federal control |
| Block grant | Money for a broad area with wide state discretion | More state flexibility |
| Unfunded mandate | A rule states must follow, with no federal money to pay for it | A frequent state complaint |
Medicaid is the classic adult example of cooperative fiscal federalism: the federal government and states jointly fund the program, and federal dollars come with conditions states must meet. Another example: Congress cannot directly set a national drinking age (not an enumerated power), so it withholds a portion of federal highway funds from any state that allows drinking under 21 — and every state complies. That is federalism by checkbook. The return of power and responsibility from Washington back to the states — through block grants and deregulation — is called devolution.
McCulloch v. Maryland (1819). Maryland tried to tax the federally chartered Second Bank of the United States. The Court held that (1) Congress could charter the bank as an implied power under the Necessary and Proper Clause — "let the end be legitimate... and all means which are appropriate... are constitutional" — and (2) Maryland could not tax it, because "the power to tax involves the power to destroy" and the Supremacy Clause bars a state from obstructing a valid federal institution. McCulloch is the case for expanding national power.
United States v. Lopez (1995). A student brought a handgun to school and was charged under the federal Gun-Free School Zones Act. The Court struck the law down: possessing a gun near a school "is in no sense an economic activity" and so does not substantially affect interstate commerce; regulating it falls under the states' reserved police powers. Lopez — the first case since 1937 to strike down a federal law for exceeding the commerce power — is the case for limiting national power.
A live adult example sits between them: a state legalizes marijuana while federal law still bans it. Under the Supremacy Clause, valid federal law prevails in a direct conflict — which is why federal and state marijuana law remain in tension.
1. A. The Necessary and Proper (Elastic) Clause is the textual source of implied powers. Fix: "Implied powers" almost always signals the Necessary and Proper Clause. - B) The Commerce Clause grants one specific enumerated power, not implied powers generally. - C) The Supremacy Clause settles conflicts; it does not create powers. - D) The Tenth Amendment reserves powers to the states. - E) The Full Faith and Credit Clause concerns state-to-state recognition of records.
2. D. Both levels taxing the same income is a classic concurrent (shared) power. Fix: If both levels can do it, the power is concurrent. - A) An enumerated federal power belongs to the nation alone; taxing is shared. - B) A reserved state power belongs to the states alone; taxing is shared. - C) Taxation is expressly granted, not merely implied. - E) Inherent powers flow from national sovereignty (e.g., foreign affairs), not shared taxation.
3. C. Under McCulloch, a state may not tax a legitimate federal institution, because the power to tax is the power to destroy and the Supremacy Clause forbids interference. Fix: State tax on a federal instrument = unconstitutional under McCulloch. - A) The Court specifically barred the state tax. - B) The Court upheld Congress's power to charter the bank. - D) The bank was upheld, not found to violate the Tenth Amendment. - E) The constitutional question was for the courts, not the state legislature.
4. B. The Supremacy Clause makes valid federal law prevail over conflicting state law. Fix: Direct federal-state conflict = Supremacy Clause decides. - A) The Commerce Clause grants federal power; it is not the tiebreaker. - C) The Necessary and Proper Clause expands federal power; it does not resolve conflicts. - D) The Tenth Amendment protects state powers, the opposite outcome. - E) The Full Faith and Credit Clause governs state-to-state recognition, not federal-state conflict.
5. B. Attaching conditions to grants to influence state policy is fiscal federalism (federalism by checkbook). Fix: Money with strings to steer state behavior = conditional grants / fiscal federalism. - A) An unfunded mandate commands action without money; here states can refuse the money. - C) The drinking age is regulated through the spending power, not the Commerce Clause. - D) Devolution returns power to the states; this expands federal influence. - E) Preemption overrides state law; here Washington offers money rather than overriding.
6. E. Under Lopez, gun possession near a school is non-economic and does not substantially affect interstate commerce, so it exceeds the Commerce Clause. Fix: Lopez = non-economic local activity is beyond the commerce power. - A) The case turned on the Commerce Clause, not the Second Amendment. - B) Funding was irrelevant to the holding. - C) The President's authority was not at issue. - D) The Supremacy Clause concerns conflicts, not the reason this law fell.
7. D. A narrow purpose with detailed federal conditions is a categorical grant. Fix: Narrow purpose + many strings = categorical; broad purpose + few strings = block. - A) A block grant funds a broad area with wide discretion. - B) An unfunded mandate provides a rule but no money. - C) Revenue sharing distributed funds with few restrictions, unlike this narrow, conditioned grant. - E) A concurrent power is a shared authority, not a grant type.
8. D. "Layer cake" is dual federalism and "marble cake" is cooperative federalism; the historical movement runs from dual to cooperative around the New Deal. Fix: Layer = dual (separate); marble = cooperative (swirled). - A) That describes a change in the type of government, not the cake metaphor. - B) That reverses the grant relationship and is unrelated to the metaphor. - C) This reverses the direction of the historical shift. - E) The metaphor concerns dual versus cooperative, not unitary versus federal.
9. A. Both cases interpret the scope of national power in relation to the states — one expanding it, one limiting it. Fix: Pair McCulloch and Lopez as the expand/limit bookends of national power over the states. - B) Neither case was decided under the Fourteenth Amendment. - C) Only McCulloch expanded national power. - D) Only Lopez limited national power. - E) Only Lopez involved a firearm, and it turned on commerce, not the right to bear arms.
10. C. A federal requirement with no money attached is an unfunded mandate. Fix: Command with no funding = unfunded mandate. - A) A categorical grant provides money for a narrow purpose. - B) A block grant provides money for a broad purpose. - D) Devolution returns power to the states rather than commanding them. - E) A concurrent power is a shared authority, not a mandate.
11. E. Licensing, schools, and local police are reserved powers of the states under the Tenth Amendment. Fix: Everyday state functions (schools, licenses, police, elections) = reserved powers. - A) Enumerated federal powers are listed for the nation, not these local functions. - B) Implied powers flow from the Necessary and Proper Clause and belong to Congress. - C) Concurrent powers are shared by both levels; these are state-run. - D) Inherent powers flow from national sovereignty, not state administration.
| Year | Federal grants to states ($ billions) | Grants as % of state/local revenue |
|---|---|---|
| 1960 | 7 | 14% |
| 1980 | 91 | 26% |
| 2000 | 286 | 22% |
| 2020 | 721 | 31% |
Which conclusion is best supported by the table?
12. C. Grants rose from $7B to $721B, and the revenue share rose from 14% to 31%, so grants grew and funded a larger share by 2020. Fix: Check both columns and confirm each claim against the actual numbers. - A) Grants rose after 1980, not declined. - B) A 31% share in 2020 shows continued dependence, not independence. - D) The percentage clearly changed across the years. - E) The share never exceeded 31%, so never a majority.
1. A. The Necessary and Proper (Elastic) Clause is the textual source of implied powers. Fix: "Implied powers" almost always signals the Necessary and Proper Clause. - B) The Commerce Clause grants one specific enumerated power, not implied powers generally. - C) The Supremacy Clause settles conflicts; it does not create powers. - D) The Tenth Amendment reserves powers to the states. - E) The Full Faith and Credit Clause concerns state-to-state recognition of records.
2. D. Both levels taxing the same income is a classic concurrent (shared) power. Fix: If both levels can do it, the power is concurrent. - A) An enumerated federal power belongs to the nation alone; taxing is shared. - B) A reserved state power belongs to the states alone; taxing is shared. - C) Taxation is expressly granted, not merely implied. - E) Inherent powers flow from national sovereignty (e.g., foreign affairs), not shared taxation.
3. C. Under McCulloch, a state may not tax a legitimate federal institution, because the power to tax is the power to destroy and the Supremacy Clause forbids interference. Fix: State tax on a federal instrument = unconstitutional under McCulloch. - A) The Court specifically barred the state tax. - B) The Court upheld Congress's power to charter the bank. - D) The bank was upheld, not found to violate the Tenth Amendment. - E) The constitutional question was for the courts, not the state legislature.
4. B. The Supremacy Clause makes valid federal law prevail over conflicting state law. Fix: Direct federal-state conflict = Supremacy Clause decides. - A) The Commerce Clause grants federal power; it is not the tiebreaker. - C) The Necessary and Proper Clause expands federal power; it does not resolve conflicts. - D) The Tenth Amendment protects state powers, the opposite outcome. - E) The Full Faith and Credit Clause governs state-to-state recognition, not federal-state conflict.
5. B. Attaching conditions to grants to influence state policy is fiscal federalism (federalism by checkbook). Fix: Money with strings to steer state behavior = conditional grants / fiscal federalism. - A) An unfunded mandate commands action without money; here states can refuse the money. - C) The drinking age is regulated through the spending power, not the Commerce Clause. - D) Devolution returns power to the states; this expands federal influence. - E) Preemption overrides state law; here Washington offers money rather than overriding.
6. E. Under Lopez, gun possession near a school is non-economic and does not substantially affect interstate commerce, so it exceeds the Commerce Clause. Fix: Lopez = non-economic local activity is beyond the commerce power. - A) The case turned on the Commerce Clause, not the Second Amendment. - B) Funding was irrelevant to the holding. - C) The President's authority was not at issue. - D) The Supremacy Clause concerns conflicts, not the reason this law fell.
7. D. A narrow purpose with detailed federal conditions is a categorical grant. Fix: Narrow purpose + many strings = categorical; broad purpose + few strings = block. - A) A block grant funds a broad area with wide discretion. - B) An unfunded mandate provides a rule but no money. - C) Revenue sharing distributed funds with few restrictions, unlike this narrow, conditioned grant. - E) A concurrent power is a shared authority, not a grant type.
8. D. "Layer cake" is dual federalism and "marble cake" is cooperative federalism; the historical movement runs from dual to cooperative around the New Deal. Fix: Layer = dual (separate); marble = cooperative (swirled). - A) That describes a change in the type of government, not the cake metaphor. - B) That reverses the grant relationship and is unrelated to the metaphor. - C) This reverses the direction of the historical shift. - E) The metaphor concerns dual versus cooperative, not unitary versus federal.
9. A. Both cases interpret the scope of national power in relation to the states — one expanding it, one limiting it. Fix: Pair McCulloch and Lopez as the expand/limit bookends of national power over the states. - B) Neither case was decided under the Fourteenth Amendment. - C) Only McCulloch expanded national power. - D) Only Lopez limited national power. - E) Only Lopez involved a firearm, and it turned on commerce, not the right to bear arms.
10. C. A federal requirement with no money attached is an unfunded mandate. Fix: Command with no funding = unfunded mandate. - A) A categorical grant provides money for a narrow purpose. - B) A block grant provides money for a broad purpose. - D) Devolution returns power to the states rather than commanding them. - E) A concurrent power is a shared authority, not a mandate.
11. E. Licensing, schools, and local police are reserved powers of the states under the Tenth Amendment. Fix: Everyday state functions (schools, licenses, police, elections) = reserved powers. - A) Enumerated federal powers are listed for the nation, not these local functions. - B) Implied powers flow from the Necessary and Proper Clause and belong to Congress. - C) Concurrent powers are shared by both levels; these are state-run. - D) Inherent powers flow from national sovereignty, not state administration.
12. C. Grants rose from $7B to $721B, and the revenue share rose from 14% to 31%, so grants grew and funded a larger share by 2020. Fix: Check both columns and confirm each claim against the actual numbers. - A) Grants rose after 1980, not declined. - B) A 31% share in 2020 shows continued dependence, not independence. - D) The percentage clearly changed across the years. - E) The share never exceeded 31%, so never a majority.