LEOSA and Federal Buildings: How 18 U.S.C. § 930 Affects Active-Duty Carry

Federal buildings sit at an odd intersection of two statutes that many officers assume work together seamlessly, but do not. LEOSA, codified at 18 U.S.C. § 926B, gives qualified active-duty officers a right to carry a concealed firearm across state and local jurisdictional lines. Separately, 18 U.S.C. § 930 governs firearms in federal facilities and contains its own set of exceptions. Understanding how these two statutes relate, rather than assuming one simply defers to the other, is essential before an officer walks into a federal office building, agency headquarters, or federal courthouse annex.

Two Different Statutes, Two Different Purposes

LEOSA was written to override state and local restrictions on concealed carry by qualified law enforcement officers, active and retired. It does not mention federal buildings specifically, and it does not purport to override other federal statutes. Section 930, by contrast, is a freestanding federal law that makes it a crime to knowingly possess or cause to be present a firearm in a federal facility, with specific carve-outs.

The relevant exception is § 930(d)(1), which exempts firearm possession that is "for the purpose of law enforcement." This language is broader than a LEOSA-specific exemption, and it has generally been read to cover on-duty and off-duty officers acting within a law enforcement capacity, including those carrying under LEOSA authority. But because § 930 is enforced by the agency controlling the building, not by state courts interpreting LEOSA, practical application varies by building, agency, and even by individual security post.

What Counts as a Federal Facility

Section 930 defines a federal facility broadly: any building or part of a building owned or leased by the federal government where federal employees are regularly present for the purpose of performing their official duties. This includes:

• Social Security Administration offices
• IRS field offices
• Passport agencies and State Department buildings
• Federal agency regional offices (EPA, DOL, USDA, etc.)
• Military installations (which have their own separate access control regime)
• Post offices, in many cases

Federal courthouses are also federal facilities, but they carry additional restrictions under § 930(e) tied specifically to court proceedings. That topic is covered in more depth in our separate look at courthouse carry, since courthouses combine § 930 with judiciary-specific security policy.

Signage, Screening, and the Reality on the Ground

Many federal buildings post signage prohibiting firearms and route all visitors through metal detectors staffed by contract security or Federal Protective Service personnel. This screening infrastructure exists regardless of § 930's law enforcement exception, because building security cannot always verify credentials at the door with the same rigor a court or agency counsel might apply later.

In practice, this means an active-duty officer relying on LEOSA and the § 930(d)(1) exception may still be stopped, screened, and asked to explain their status at security. Some federal buildings have liaison procedures for law enforcement, others do not. It is reasonable to expect that:

• Uniform or visible credentials will ease the interaction significantly
• Plainclothes officers should be prepared to produce agency identification and LEOSA-qualifying documentation immediately
• Security personnel are not always trained on LEOSA specifics, and some default to a blanket no-firearms policy for anyone not part of their own agency's police force

Officers who carry regularly should review our guide on what documentation to carry to prove LEOSA qualification, since the burden of demonstrating status typically falls on the officer in these encounters.

Agency-Specific Variation

Not all federal buildings apply § 930's law enforcement exception the same way. Some agencies, particularly those handling sensitive records or high-risk casework (certain IRS Criminal Investigation offices, for example), maintain stricter internal policies that go beyond the statutory minimum. Others, especially routine administrative offices, apply a more permissive standard for any officer presenting valid law enforcement credentials.

Because § 930 is a federal statute enforced uniformly on paper, but administered building-by-building in practice, officers should not assume that clearance at one federal building guarantees the same experience at another, even within the same city or agency family. When in doubt, contacting the facility's security office in advance, particularly for a planned visit rather than an incidental one, avoids friction at the checkpoint.

Interaction With State Preemption Rules

It is worth remembering that § 930 operates independently of state law entirely. A state's preemption statute or LEOSA reciprocity pattern, of the kind discussed in our overview of how off-duty carry rules shift across state lines, has no bearing on federal property. Federal buildings are governed by federal law only, regardless of what state they sit in. An officer whose LEOSA carry is otherwise unrestricted in a given state can still be lawfully barred from carrying inside a federal building if the on-site security determination does not recognize their status, since § 930 enforcement is a federal, not state, matter.

Key Takeaways

• 18 U.S.C. § 930 is a separate statute from LEOSA and governs firearms in federal facilities specifically.
• Section 930(d)(1) exempts possession for law enforcement purposes, which generally covers LEOSA-qualified officers, but enforcement varies by building.
• Screening staff may not be trained on LEOSA specifics, so credentials and documentation should be ready before entering.
• Federal courthouses carry additional restrictions beyond standard federal buildings.
• State preemption and reciprocity rules have no effect on federal property; § 930 applies regardless of state law.

This article is for general information only and is not legal advice. Federal facility policies and on-site security practices vary and can change. Officers should verify current requirements with the specific facility or their agency's legal counsel before carrying on federal property.