DOJ Says Lawful Gun Owners Can Carry in Post Offices

For decades, gun owners have generally been told that carrying a firearm into a U.S. Post Office is illegal.

The Justice Department now says that isn't what federal law actually says.

In a significant legal opinion issued August 12, 2026, the Department of Justice's Office of Legal Counsel concluded that federal law permits otherwise law-abiding citizens to carry constitutionally protected firearms for self-defense inside post offices that are generally open to the public.

Even more importantly, DOJ concluded that the U.S. Postal Service cannot enforce its separate regulation that purports to ban firearms on postal property without a self-defense exception.

There are some important limitations here, and this isn't the same thing as the Supreme Court striking down the post office gun ban. But this is a major change in the federal government's position.

What Federal Law Actually Says

The starting point is 18 U.S.C. § 930.

Section 930(a) generally makes it a federal crime to knowingly possess a firearm or other dangerous weapon in a federal facility. Post offices have traditionally been treated as federal facilities covered by that prohibition.

But there is an exception that hasn't received nearly as much attention.

Section 930(d)(3) says the prohibition does not apply to:

“the lawful carrying of firearms or other dangerous weapons in a Federal facility incident to hunting or other lawful purposes.”

That phrase, “other lawful purposes,” is where things get interesting.

Historically, the federal government has taken a narrow view of the exception. DOJ now says that interpretation was wrong.

Self-Defense Is a “Lawful Purpose”

The Office of Legal Counsel concluded that someone must satisfy two basic requirements to fall within the exception. The person's possession and carrying of the firearm must itself be lawful, and the person must be carrying it for a lawful purpose.

Self-defense qualifies.

In fact, DOJ called carrying a firearm for self-defense while entering a building open to the public a “paradigmatic” example of a lawful purpose.

That shouldn't exactly be a shocking conclusion after District of Columbia v. Heller, New York State Rifle & Pistol Association v. Bruen, and the Supreme Court's subsequent Second Amendment decisions recognizing self-defense as central to the right to keep and bear arms.

But it is a significant change for the federal government to formally apply that reasoning to post offices.

DOJ Also Says the Postal Service's Separate Ban Can't Be Enforced

There is another wrinkle here.

The Postal Service has its own regulation, 39 C.F.R. § 232.1(l), which broadly prohibits carrying or storing firearms and other dangerous weapons on postal property except for “official purposes.”

Unlike § 930, that regulation doesn't contain an exception for carrying for other lawful purposes.

DOJ concluded that this creates a conflict. Congress enacted § 930 in 1988 and specifically provided an exception for lawful carrying for lawful purposes. The Postal Service cannot use its more general authority over postal property to eliminate an exception Congress provided.

The Office of Legal Counsel therefore concluded that the Postal Service regulation is unlawful as applied to otherwise law-abiding citizens carrying constitutionally protected firearms for self-defense inside post offices open to the public.

The opinion goes so far as to state that the Executive Branch may not enforce either § 930(a) or the Postal Service regulation against a law-abiding person carrying a constitutionally protected firearm into a public post office for self-defense.

That's a substantial statement coming from the agency responsible for federal prosecutions.

This Comes After a Federal Court Already Questioned the Ban

If this sounds familiar, it should.

Back in March, I wrote about a federal court blocking enforcement of the post office gun ban for members of the Firearms Policy Coalition and Second Amendment Foundation.

At the time, I cautioned against headlines suggesting the post office ban had simply disappeared. The court had issued an injunction with a limited scope, not a final nationwide ruling declaring that everyone could immediately begin carrying inside post offices.

But the court's reasoning mattered.

The judge concluded that the plaintiffs were likely to succeed in their Second Amendment challenge because the government had failed to establish a historical tradition supporting a broad prohibition on firearms in post offices.

The new DOJ opinion expressly discusses that litigation and reaches much of the same historical problem.

Post offices have existed since the Founding. Americans carried firearms during that same period. Yet DOJ says it is aware of no historical evidence showing a comparable prohibition on carrying firearms in post offices during the relevant historical period.

That absence matters under Bruen.

The Government's Sensitive-Place Argument Is Getting Harder

One of the more interesting parts of the opinion is DOJ's discussion of places routinely visited by ordinary people.

The government has frequently leaned heavily on the concept of “sensitive places” when defending restrictions on carrying firearms. Courthouses, polling places and certain government buildings have historical support for special restrictions.

That doesn't mean every building owned or operated by the government automatically becomes a constitutionally permissible gun-free zone. A neighborhood post office isn't the same thing as a courthouse or secured government installation. However, I for sure would argue that this does apply to federal buildings that are not secure areas. Like a building inside a national park for example. It would seem this opinion, though written specifically about post offices; could be used to defend the act of carrying a gun in the visitor's center at Yellowstone National Park for sure.

DOJ's historical review found no tradition supporting a blanket firearm prohibition simply because the government happens to own or operate the building.

So Can You Carry a Gun Into the Post Office Now?

According to the Justice Department's current interpretation of federal law, a law-abiding person who is otherwise lawfully carrying a constitutionally protected firearm for self-defense may carry it into a post office that is generally open to the public.

But I wouldn't turn that sentence into “guns are now legal at every post office.”

There are several important limitations.

• Your possession and carry of the firearm must otherwise be lawful.
• State and local laws still matter, including applicable licensing requirements.
• The opinion addresses constitutionally protected firearms carried for lawful purposes such as self-defense.
• The opinion specifically addresses post offices generally open to the public.
• It does not establish the same rule for every other type of federal facility.
• Federal courthouses are governed by a separate provision of § 930 and are not covered by this conclusion.

There's another distinction worth understanding.

An Office of Legal Counsel opinion is not a Supreme Court decision. It does not bind federal courts and doesn't erase § 930 from the U.S. Code.

What it does is establish the Justice Department's interpretation of the law for the Executive Branch. And in this case DOJ's conclusion is unusually direct: the Executive Branch may not enforce these provisions against the law-abiding citizen described in the opinion.

A Much Bigger Development Than a Single Injunction

Five months ago, the post office carry issue looked like another Second Amendment lawsuit that might eventually produce an important precedent.

That litigation still matters.

But the federal government's own legal position has now shifted dramatically. DOJ isn't merely declining to defend one particular prosecution or acknowledging that the issue is unsettled. Its Office of Legal Counsel has concluded that Congress already exempted lawful self-defense carry from § 930(a), that the Postal Service cannot override that exception through regulation, and that serious Second Amendment problems would exist with a broader prohibition anyway.

That doesn't settle every question surrounding firearms on federal property.

It does, however, make the old blanket advice that “federal law prohibits guns in post offices” much harder to defend.

For concealed carriers, the takeaway is fairly simple: understand both federal law and the laws of your state before carrying anywhere that has traditionally been treated as a prohibited location. The legal landscape around so-called sensitive places has been changing quickly since Bruen, and this is another significant piece of that shift.