Skip to content

Federal vs. State Powers

Federal versus state powers is the question of which level of government may act on a given issue. The Constitution lists powers for Congress and reserves others to the states, and the Supremacy Clause makes federal law win when the two conflict. Courts often decide where the line falls, using doctrines such as preemption and the Commerce Clause.

People usually bring questions about whether the federal government can require states to act, whether states can defy federal law, and who controls matters such as marijuana, policing, and elections. Others ask how the Tenth Amendment limits federal power and how states can challenge the national government in court.

24articles
October 5last updated

An independent team explaining how government works

GovFacts is a nonpartisan site that makes government concepts, policies and programs easier to understand and use.

Referenced by Brookings, CNN, Forbes, Fox News, Pew Research, Snopes, The Hill and USA Today.

The Webby-recognized AI behind our articles »

Latest in Federal vs. State Powers

All Articles on Federal vs. State Powers

Inside the Minneapolis Hearing on Federal Power Over State Police

A question that rarely gets tested in federal court with this kind of urgency is being examined in Minneapolis: Can the federal government flood…

15 Min Read

The Constitutional Limits on Federal Coercion of State Cooperation

On January 25, 2026, Attorney General Pam Bondi sent Governor Tim Walz a letter demanding Minnesota's complete voter registration database, Medicaid records, and food…

23 Min Read

The Tenth Amendment Limit: When Federal Agents Can’t Commandeer Local Police

Minnesota accumulated 3,000 overtime hours in four days responding to federal immigration enforcement. On January 12, 2026, Attorney General Keith Ellison filed a federal…

15 Min Read

Can States Bill the Federal Government for Operations They Didn’t Request?

Minneapolis has spent over $2 million on police overtime in just four days—not for a natural disaster or local emergency, but to respond to…

14 Min Read

Can the President Order FEMA Into a State Without the Governor’s Request?

In the American system of government, a delicate balance of power exists between the federal government and the states. This principle, known as federalism,…

22 Min Read

How the Constitution Guarantees Your Rights in Every State

Often overshadowed by the Bill of Rights or the articles establishing the three branches of government, Article IV of the U.S. Constitution serves as…

31 Min Read

The Commerce Clause of the U.S. Constitution

In Article I, Section 8 of the Constitution, the Commerce Clause states that Congress shall have power "to regulate Commerce with foreign Nations, and…

30 Min Read

The Tenth Amendment: How States Keep Power from Federal Government

The Tenth Amendment reserves powers to states and the people, with limits on federal commands, funding conditions, and claims of state sovereignty.

41 Min Read

How States Can Legalize Marijuana Despite Federal Prohibition

American cannabis policy presents a contradiction: federal law classifies marijuana alongside heroin as among the most dangerous drugs, yet 24 states have legalized it…

32 Min Read

A History of the American Legal Drinking Age

The American drinking age grew from state alcohol rules, changing ideas of adulthood and federal highway funding, with exceptions still shaped by states.

35 Min Read