The anti-commandeering doctrine is a principle of American constitutional law holding that the federal government may not compel state legislatures or executive officers to implement or enforce federal law. Rooted in the Tenth Amendment and the broader structure of federalism established by the Constitution, the doctrine draws a distinction between federal regulation of private conduct - which is generally permissible under the Supremacy Clause - and federal conscription of state governmental machinery, which the Supreme Court has held is not. The doctrine operates as a structural limit on congressional power regardless of whether the federal law in question would otherwise fall within an enumerated power.

The doctrine's modern form emerged from two landmark Supreme Court decisions. In New York v. United States, 505 U.S. 144 (1992), the Court struck down a provision of the Low-Level Radioactive Waste Policy Amendments Act that required states to “take title” to radioactive waste if they failed to meet federal disposal deadlines, holding that Congress may not commandeer state legislative processes. Five years later, in Printz v. United States, 521 U.S. 898 (1997), the Court extended the principle to executive officers, invalidating provisions of the Brady Handgun Violence Prevention Act that required local law enforcement to conduct background checks on firearm purchasers. Justice Scalia's majority opinion in Printz grounded the doctrine in the constitutional design of dual sovereignty, arguing that requiring state officers to administer federal programs would blur accountability and undermine the framers' structural protections for individual liberty. The doctrine was further refined in Murphy v. National Collegiate Athletic Association, 584 U.S. 453 (2018), which struck down a federal law prohibiting states from authorizing sports gambling, clarifying that Congress may not issue direct commands to state legislatures even in the form of prohibitions.

The anti-commandeering doctrine does not prohibit all federal influence over state behavior. Congress retains broad authority to attach conditions to federal grants - states may decline the money but must accept the conditions if they take it - a mechanism upheld in South Dakota v. Dole, 483 U.S. 203 (1987), subject to limits on coerciveness articulated in NFIB v. Sebelius, 567 U.S. 519 (2012). Federal law that preempts conflicting state law under the Supremacy Clause is also distinct from commandeering: preemption nullifies state action but does not conscript state actors. The doctrine applies specifically to situations where the federal government seeks to use state officers as instruments of federal administration. Whether the doctrine extends to state courts, which have historically been required to apply federal law, remains a subject of academic and judicial discussion.

The doctrine has been invoked in several high-profile policy disputes. “Sanctuary” jurisdictions have relied on anti-commandeering arguments to decline participation in federal immigration enforcement, citing Printz and its progeny. Some states have enacted laws declining to enforce or cooperate with federal firearms regulations, also invoking the doctrine. Debates over federal marijuana policy, public health mandates, and election administration have each raised questions about the boundaries of permissible federal direction of state actors. The doctrine's practical effect is asymmetric: it limits the federal government's ability to conscript state resources, but does not prevent the federal government from enforcing its own law through its own officers and agencies.

There is substantial legal consensus that the anti-commandeering doctrine is settled Supreme Court precedent binding on lower courts. Its constitutional foundations and appropriate scope remain subjects of scholarly debate. See Anti-Commandeering Doctrine - Legal Consensus.

• Federalist Viewpoint - The doctrine is a necessary structural protection for state sovereignty, preserving dual accountability and preventing federal overreach.
• Nationalist Viewpoint - The doctrine impedes effective national governance, enabling states to frustrate legitimate federal policy and creating a patchwork of enforcement.
• Originalist Viewpoint - The doctrine reflects the framers' design of divided sovereignty and is properly grounded in the Constitution's text and structure.
• Progressive Viewpoint - The doctrine has been selectively applied and can be used to shield state non-compliance with federal civil rights and regulatory obligations.
• Libertarian Viewpoint - The doctrine is a valuable check on centralized power, and its logic may support broader limits on federal coercion of subnational governments.

• Anti-Commandeering Doctrine - History
• Anti-Commandeering Doctrine - Debate
• Anti-Commandeering Doctrine - Legal Consensus
• Federalism
• Tenth Amendment
• Supremacy Clause
• Nullification
• Preemption Doctrine
• Sanctuary Jurisdictions
• Conditional Spending

1. New York v. United States, 505 U.S. 144 (1992).
2. Printz v. United States, 521 U.S. 898 (1997).
3. Murphy v. National Collegiate Athletic Association, 584 U.S. 453 (2018).
4. South Dakota v. Dole, 483 U.S. 203 (1987).
5. National Federation of Independent Business v. Sebelius, 567 U.S. 519 (2012).
6. Saikrishna Bangalore Prakash, “Field Office Federalism,” 79 Virginia Law Review 1957 (1993).
7. Vicki C. Jackson, “Federalism and the Uses and Limits of Law: Printz and Principle?” 111 Harvard Law Review 2180 (1998).
8. Robert A. Mikos, “On the Limits of Supremacy: Medical Marijuana and the States' Overlooked Power to Legalize Federal Crime,” 62 Vanderbilt Law Review 1421 (2009).