This is the third post in a series of six by Jonathan Goldstein adapting a set of administrative comment letters submitted in response to recent ATF rulemakings. The posts are designed to make the central legal and policy arguments more accessible to a broader audience while preserving the statutory, constitutional, and administrative-law issues raised in the underlying comments. Readers interested in the full legal argument, proposed regulatory text, and citations can find the comment letter that is the basis of this post here.

Mens rea is not an academic detail in firearms regulation. For an FFL, the difference between negligence and willfulness can be the difference between a correctable paperwork violation and loss of a license. For an individual, it can be the difference between lawful conduct, civil exposure, and criminal liability.

That makes ATF’s proposed definition of “willfully” important. The proposal would define the term, for Gun Control Act purposes, to require intentional conduct undertaken with actual knowledge that the conduct is unlawful. That approach tracks the Supreme Court’s treatment of “willfully” in Bryan v. United States and better fits the statutory design Congress adopted in the Firearms Owners’ Protection Act of 1986 (FOPA).

The statutory structure

Federal firearms law does not use mental-state terms randomly. Section 924(a)(1) uses “knowingly” in some subparagraphs and “willfully” in another. Section 923(e), the license-revocation provision, authorizes revocation when a licensee has willfully violated the chapter or implementing regulations. If “willfully” meant little more than “knowingly” or “carelessly,” Congress’s choice of different words would not help. The better reading is that “willfully” requires something more: knowledge that the conduct is unlawful.

FOPA reinforces the point. Congress did not merely insert “willfully” into the revocation provision. It also enacted § 923(f)(4), which bars ATF from revoking or denying a license based on the same facts after a licensee is acquitted of criminal charges. That linkage is hard to square with a system in which the government could fail to prove criminal willfulness but then revoke the license on a lower civil standard based on the same conduct. The statutory structure suggests that the civil and criminal uses of “willfully” should be aligned.

Bryan and knowledge of unlawfulness

In Bryan v. United States, the Supreme Court construed “willfully” in § 924(a)(1)(D). The Court held that the government must prove the defendant acted with knowledge that his conduct was unlawful. The government need not always prove knowledge of the specific statutory citation, but it must prove more than intentional performance of the act itself.

That standard is especially important in a regulatory field as detailed as firearms law. FFLs must comply with recordkeeping, identification, background-check, transfer, storage, timing, and reporting rules. Some violations are serious and intentional. Others are clerical, inadvertent, or the product of misunderstanding. A willfulness standard that collapses those categories gives enforcement officials too much discretion and regulated parties too little notice.

The point is not that paperwork does not matter. It does. Records are central to the Gun Control Act’s operation. But a legal regime can take records seriously without treating every error as evidence of a culpable mental state.

The problem with “plain indifference”

Several courts of appeals have used a “plain indifference” formulation in FFL revocation cases. That language has sometimes allowed revocation where a licensee knew the law’s requirements and repeatedly failed to comply. In egregious cases, that may fit the ordinary understanding of willfulness.

The problem arises when “plain indifference” becomes a substitute for actual knowledge of unlawfulness. If the standard becomes “the dealer should have known,” then willfulness has drifted toward negligence. If repeated mistakes automatically become willful because they are repeated, then the inquiry risks becoming circular: the violation is willful because it happened again, and it happened again because the licensee must have been indifferent.

ATF’s proposed definition is a useful correction. It re-centers the inquiry on state of mind. Did the person know the conduct was unlawful? Did the person intend to engage in it anyway? That is the question “willfully” should ask.

Willful blindness, repetition, and supervisors

A good final rule should also address predictable pressure points.

First, willful blindness must be carefully defined. The Supreme Court’s formulation in Global-Tech Appliances v. SEB requires both subjective belief in a high probability of the relevant fact and deliberate actions to avoid learning that fact. In the firearms context, the relevant point is not merely that something might be irregular; it is that the conduct is unlawful. The doctrine should not become a backdoor for “should have known” liability.

Second, repetition should be probative but not automatically decisive. A prior written notice can matter. If ATF tells a licensee that a specific practice violates a specific rule, and the licensee repeats the same practice, that may support willfulness. But repetition should not eliminate the need to prove culpable state of mind as to the later conduct. The licensee may have misunderstood the notice, corrected one process but failed at another, or made a different good-faith error. Those facts matter.

Third, supervisor liability should be tied to participation, knowledge, or ratification. A responsible person should not be deemed willful merely because an employee made an error somewhere in the organization. By the same token, a supervisor who knows unlawful conduct is occurring and ratifies it should not be able to hide behind delegation. The line should be actual involvement or actual ratification, not title alone.

What Loper Bright changes

The Supreme Court’s decision in Loper Bright Enterprises v. Raimondo does not automatically overrule prior firearms-revocation cases. Courts of appeals that adopted “plain indifference” formulations remain part of the legal landscape unless and until reconsidered. But Loper Bright does affect the interpretive setting. Courts are now instructed to exercise independent judgment about statutory meaning, rather than deferring to an agency’s permissible interpretation.

That makes ATF’s rulemaking especially significant. The agency is not merely choosing an enforcement policy. It is identifying what it understands to be the best reading of the statute after Bryan, FOPA, and the broader post-Loper Bright administrative-law framework. A regulation aligned with actual knowledge of unlawfulness gives courts a clearer and more defensible standard to review.

Not overcriminalizing

The firearms regulatory system depends on licensees taking compliance seriously. But seriousness and strict liability are not the same thing. A willfulness standard should preserve the distinction between the dealer who tries to comply and makes mistakes, the dealer who is reckless with obligations after clear notice, and the dealer who intentionally violates known law.

ATF’s proposal is valuable because it restores that distinction. The final rule should make it durable by defining willful blindness narrowly, treating repetition as evidence rather than automatic proof, and limiting supervisor liability to actual involvement or ratification. In a system where licenses, livelihoods, and liberty can turn on a word, “willfully” should mean what the Supreme Court has said it means: intentional conduct undertaken with knowledge that the conduct is unlawful.

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