Second Amendment sanctuary counties are legal when they stay symbolic, and illegal when they try to do more. A county board can pass a resolution voicing support for gun rights and refusing to volunteer local resources for federal firearms enforcement, and that stands on solid constitutional ground. An ordinance that purports to nullify state or federal gun laws, or to bar local officers from enforcing them, has been struck down by every court that has reviewed one.
The gap between those two versions is where most of the confusion lives, so it is worth walking through what the law actually allows a county to do, what it does not, and what the designation changes for the people who live under it.
The One Piece of Solid Legal Ground
The strongest argument for sanctuary designations comes from Printz v. United States (1997). The Supreme Court struck down provisions of the Brady Handgun Violence Prevention Act that required local law enforcement officers to conduct background checks on gun buyers, holding that “the Federal Government may neither issue directives requiring the States to address particular problems, nor command the States’ officers, or those of their political subdivisions, to administer or enforce a federal regulatory program.”1Justia. Printz v. United States, 521 U.S. 898
This is the anti-commandeering doctrine. Washington cannot force a county sheriff’s office to spend its budget and personnel enforcing federal gun laws. Federal agents remain free to enforce federal law, but they cannot conscript local police to do the work for them. A county resolution declining to volunteer local resources for federal firearms enforcement sits comfortably within this rule.
Where the Theory Falls Apart
Here is the catch that most sanctuary advocates run into. The anti-commandeering doctrine limits what the federal government can demand of state and local officials. Most Second Amendment sanctuary counties are not resisting federal law. They are resisting state gun regulations, and the legal relationship between a county and its state is nothing like the relationship between a state and the federal government.
Counties Are Creations of the State
Under Dillon’s Rule, local governments hold only those powers expressly granted to them by the state or fairly implied from those grants. Counties and cities are not sovereign. The U.S. Supreme Court has described local governments as “mere political subdivisions of the state” whose powers can be restricted, enlarged, or withdrawn entirely at the state legislature’s discretion. When a local ordinance conflicts with state law, the state law wins and the local measure is void. A sanctuary ordinance cannot override a state gun regulation any more than a city council can vote to suspend the state speed limit.
The Supremacy Clause
The Supremacy Clause of the U.S. Constitution makes federal law “the supreme Law of the Land” and binds state judges to it regardless of any conflicting state provision.2Congress.gov. Constitution of the United States – Article VI No state or local government can declare a federal law invalid within its borders. Federal preemption can be express or implied, and it can cover an entire field if federal regulation is comprehensive enough.3Congress.gov. ArtVI.C2.1 Overview of Supremacy Clause Only courts can rule on constitutionality. A county board cannot.
State Firearm Preemption Statutes
All but a handful of states have laws that expressly reserve firearms regulation to the state legislature and prohibit cities and counties from passing their own gun rules, whether more restrictive or more permissive than state law. Several states have added punitive teeth: local officials who pass prohibited gun ordinances can face removal from office, personal civil liability, fines, mandatory payment of attorney’s fees, and in at least one state, potential criminal charges. A sanctuary ordinance that tries to block enforcement of a valid state gun law can trigger these penalties, forcing local officials to choose between the declaration and their own legal exposure.
Resolutions Versus Ordinances
This distinction matters more than most coverage acknowledges. A resolution is a formal statement of opinion from a governing body. It signals a political position and creates no enforceable law. An ordinance is local legislation that establishes binding rules and can carry penalties.
The vast majority of Second Amendment sanctuary designations are resolutions. They voice support for gun rights and opposition to specific laws without actually prohibiting local officials from enforcing anything. Those are legal. The smaller number of jurisdictions that have passed ordinances attempting to create binding restrictions on how local resources are used, or purporting to declare specific gun laws void, are the ones that have run into trouble in court.
How Courts Have Ruled
The pattern in the case law is consistent. Missouri enacted its Second Amendment Preservation Act in 2021, a statewide law declaring certain federal firearm laws “invalid” within the state and imposing penalties on local agencies that enforced them. The U.S. Court of Appeals for the Eighth Circuit struck the law down in 2024, holding that “a State cannot invalidate federal law to itself” and that the entire act was inseparable from its unconstitutional premise.4United States Court of Appeals for the Eighth Circuit. United States v. State of Missouri A 2026 effort to revive the law was rejected in committee.
At the county level, Oregon courts voided multiple sanctuary ordinances, ruling that state law places firearms regulation authority solely with the state legislature. Counties that had passed binding ordinances declaring gun laws void were forced to rescind them or accept court orders invalidating them. Some dropped their appeals rather than risk unfavorable precedent.
Symbolic resolutions have not been challenged, because they do not purport to change what the law is. Ordinances and statutes that attempt to nullify or block enforcement of valid laws have not survived review.
What It Means If You Live in a Sanctuary County
The designation does not exempt you from any gun law. Every state and federal firearm regulation that applied before the resolution still applies after it. If your state passes a universal background check requirement, you are legally required to comply regardless of what your county board voted. Violations can still result in prosecution, fines, and imprisonment. No local declaration provides a legal defense.
For local law enforcement, the position is uncomfortable. Officers swear oaths to uphold all applicable laws, not only the ones the county board approves of. A sheriff who refuses to enforce a valid state law risks personal liability, removal from office in states with punitive preemption statutes, or civil rights claims under 42 U.S.C. ยง 1983, which allows lawsuits against anyone who deprives a person of constitutional rights while acting under color of law.5Office of the Law Revision Counsel. 42 U.S. Code 1983 – Civil Action for Deprivation of Rights Federal agents remain free to enforce federal gun laws within any jurisdiction, and local officials cannot legally interfere.
Resolutions still shape enforcement in practice. A sheriff’s office that has publicly declared itself a Second Amendment sanctuary is unlikely to prioritize proactive enforcement of a state gun regulation it opposed, even where it cannot formally refuse. Enforcement discretion is broad, and these declarations influence how it gets exercised. What they cannot do is change the law itself.
Why the Immigration Sanctuary Comparison Misleads
The shared label invites the assumption that the two kinds of sanctuary sit on the same legal footing. They do not. Immigration sanctuary cities are pushing back against federal enforcement, so the anti-commandeering doctrine applies directly. A city can decline to honor an ICE detainer or refuse to hold someone for federal agents, and it is exercising a right the Supreme Court has recognized.
Second Amendment sanctuary counties are overwhelmingly pushing back against state gun laws. That flips the relationship. Counties do not have constitutional independence from their states the way states have independence from the federal government. A county sheriff refusing to enforce state law is not in the same legal position as a city police chief refusing to assist federal immigration agents. Gun sanctuaries have to rely on state home-rule arguments rather than the federal anti-commandeering doctrine, and those arguments have not fared well in court.
The short version: the label is legal, the symbolic gesture is legal, and the refusal to volunteer local help for federal enforcement is legal. Everything past that has been struck down.