Fourth Circuit Clarifies “Sensitive Places” as a Bruen Step-Two Inquiry and Recognizes a Second Amendment Proprietary-Property Rule

1. Introduction

This consolidated litigation challenged Maryland’s post-New York State Rifle & Pistol Association, Inc. v. Bruen location-based firearm carry prohibitions. Two sets of plaintiffs (individual permit-holders and organizations) brought Second Amendment challenges—primarily facial—against a wide range of “gun-free” rules, including bans covering government buildings, mass transit, school grounds, public demonstrations (and a 1,000-foot buffer), state parks and forests, healthcare facilities, multiple “places of amusement,” locations that sell alcohol for on-site consumption, and private property absent affirmative permission.

The central legal issue was how to analyze “sensitive places” after Bruen and United States v. Rahimi—specifically, where the “sensitive place” concept fits within the two-step history-and-tradition framework and what kinds of historical analogues suffice. A second structural issue arose in the mass-transit context: whether government, acting as a proprietor/market participant, may restrict guns on its operational property without running afoul of the Second Amendment.

2. Summary of the Opinion

The Fourth Circuit affirmed in part and reversed in part, adopting a clear framework: “sensitive places” analysis belongs at Bruen step two (history and tradition), not as a limitation built into the Second Amendment’s plain text at step one.

3. Analysis

3.1 Precedents Cited (and how they shape the decision)

A. The Supreme Court’s core Second Amendment trilogy and its extension

• District of Columbia v. Heller, 554 U.S. 570 (2008): The opinion treats Heller as the origin of the “sensitive places” concept and as direct support for upholding bans in “government buildings.” The panel reads Heller’s statement (“government buildings” as sensitive) as sufficient to resolve that category without further historical excavation.
• New York State Rifle & Pistol Association, Inc. v. Bruen, 597 U.S. 1 (2022): Provides the two-step test and the instruction that sensitive-place reasoning is part of the analogical historical inquiry. The court relies on Bruen to place sensitive places at step two and to reject overly expansive “everything is sensitive” logic (citing Bruen’s Manhattan example).
• United States v. Rahimi, 602 U.S. 680 (2024): Supplies the modern articulation of “why and how” analysis and reinforces that laws need not be historical “twins,” but must be consistent with founding-era principles. The court also uses Rahimi to frame facial-challenge burdens via United States v. Nutter.

B. Fourth Circuit en banc and post-Bruen scaffolding

• United States v. Price, 111 F.4th 392 (4th Cir. 2024) (en banc): Supplies the Fourth Circuit’s three step-one questions (who, common-use arms, and course of conduct). The opinion also adopts the concurrence’s insight that Bruen uses sensitive-place regulations as examples of step-two analogical reasoning, not step-one textual limitations.
• Bianchi v. Brown, 111 F.4th 438 (4th Cir. 2024) (en banc): Used to justify the court’s temporal methodology: Founding-era sources principally guide step one, while step two may draw on broader American historical practice to test consistency with tradition. The court analogizes its “long view” approach in Bianchi to its sensitive-place analysis here.
• Maryland Shall Issue, Inc. v. Moore, 116 F.4th 211 (4th Cir. 2024) (en banc): Provides the de novo standard for summary judgment review and frames the procedural posture.
• United States v. Gould, 146 F.4th 421 (4th Cir. July 29, 2025): Reinforces that bans on possession/carry by otherwise law-abiding individuals concern conduct “covered by the Second Amendment’s plain text” at step one—supporting the court’s move to step two for sensitive places.
• LaFave v. The County of Fairfax, 149 F.4th 476 (4th Cir. 2025): The panel cites LaFave to show the circuit has already treated “schools are sensitive places” dicta as operative guidance, supporting the school-grounds holding.

C. Facial challenges, standing, and pre-enforcement review

• United States v. Nutter, 137 F.4th 224 (4th Cir. 2025) (quoting United States v. Rahimi): Frames the high bar for facial challenges: plaintiffs must show “no set of circumstances” where the law is valid; the government need only show constitutionality in some applications. This matters especially to mass transit (where the court suggests at least some MTA contexts allow prohibition) and to the broad place-based bans generally.
• Lujan v. Defs. of Wildlife, 504 U.S. 555 (1992), Susan B. Anthony List v. Driehaus, 573 U.S. 149 (2014), Steffel v. Thompson, 415 U.S. 452 (1974), and Maryland Shall Issue, Inc. v. Hogan, 971 F.3d 199 (4th Cir. 2020): These cases structure pre-enforcement standing analysis. The court applies them to uphold standing for the demonstrations restriction (Kipke’s intent to attend annual demonstrations and fear of prosecution), and for the private-property-open-to-public rule (credible threat of prosecution and imposed permission-seeking burden). Conversely, it denies standing for non-public private property because no declarant alleged intent to bring guns into dwellings.

D. The “proprietary property doctrine” imported from First Amendment jurisprudence

• Engquist v. Or. Dep't of Ag., 553 U.S. 591 (2008), United States v. Kokinda, 497 U.S. 720 (1990), Int'l Soc. for Krishna Consciousness, Inc. v. Lee, 505 U.S. 672 (1992), Lehman v. City of Shaker Heights, 418 U.S. 298 (1974), White Coat Waste Proj. v. Greater Richmond Transit Co., 35 F.4th 179 (4th Cir. 2022), Young v. N.Y.C. Transit Auth., 903 F.2d 146 (2d Cir. 1990): The court uses these First Amendment “forum/proprietor” authorities to support a new Second Amendment rule: when government acts as proprietor/market participant managing operational property (rather than regulating public land generally), it may prohibit guns. This is the main doctrinal novelty of the transit holding.
• United States v. Class, 930 F.3d 460 (D.C. Cir. 2019), abrogated on other grounds by Bruen: Cited to show another circuit already extended proprietary-function reasoning into Second Amendment space.
• Wolford v. Lopez, 116 F.4th 959 (9th Cir. 2024) and Antonyuk, 120 F.4th: The court leans heavily on these sister-circuit decisions for post-Founding analogues (parks; vulnerable-population sites; crowded places; amusement venues; alcohol locations), and to bolster the mass-transit discussion (including historical railroad rules and luggage-checking distinctions).

E. Public demonstrations, peaceable assembly, and the First Amendment interface

• N. A. A. C. P. v. Claiborne Hardware Co., 458 U.S. 886 (1982): Used to emphasize that violence and weapons cannot “masquerade” as protected advocacy, supporting the state’s interest in ensuring demonstrations remain peaceable.
• Historical and state cases: Carr v. State, 34 Ark. 448 (1879) and Smith v. State, 50 Tenn. 511 (1872): These are used mainly to narrow “traveler” exceptions and to distinguish short-distance commuting from perilous “journey” travel—important to rejecting the claim that travel exceptions undermine transit restrictions.

3.2 Legal Reasoning

A. Where “sensitive places” fits in the Bruen test

The opinion’s most general (and precedentially portable) move is its placement of the sensitive-place doctrine at Bruen step two. The court reasons that sensitive-place laws regulate the “proposed course of conduct” (public carry), which is textually protected at step one; therefore the constitutionality question turns on historical tradition at step two. It emphasizes Rahimi’s “why and how” framework: even if the state pursues a permissible aim, the method and extent cannot exceed historical practice.

B. A new circuit-level rule: the Second Amendment “proprietary property doctrine”

The court explicitly “join[s]” the Ninth and D.C. Circuits in extending the government-as-proprietor distinction to the Second Amendment. The key conceptual claim is that operating a transit system is akin to operating a nonpublic forum in the speech context: government is “engaged in commerce” and managing internal operations, and thus may impose operational rules—including a gun ban—without offending the Second Amendment.

Notably, the opinion also offers an independent history-and-tradition justification: because Founding-era analogues for modern mass transit are thin, the court looks to historic railroad regulations (often private) as informative of tradition and then distinguishes the MTA context from the Ninth Circuit’s narrower conclusion in Wolford v. Lopez by stressing the lack of luggage-checking options and the resulting “readily accessible” character of firearms in typical commuter transit environments.

C. Analogical reasoning across place categories

Across parks, forests, hospitals, amusement venues, alcohol-serving locations, and demonstrations, the court repeatedly uses analogical reasoning: it identifies (1) the “why” of a restriction (e.g., vulnerability, crowd density, public peace, intoxication risk, tranquility, child-centered activity) and (2) the “how” (often categorical bans), then compares to historical patterns—sometimes notably from the mid- to late-1800s—asserting those patterns constitute “our national tradition.”

D. The court draws a line at “default public-place gun bans” via the private-property rule

The court invalidates Maryland’s “permission-first” rule for private property held open to the public because it finds no relevant historical tradition supporting a state-imposed default of prohibition. It rejects Maryland’s attempt to ground the law in trespass principles, emphasizing that trespass law already empowers owners to exclude firearms and the statute is instead a criminal prohibition targeting carriers. The court is candid about practical effect: a permission-first default would make “most public places ‘gun-free zones,’” which it sees as incompatible with Bruen’s warning against converting large swaths of ordinary life into sensitive places.

3.3 Impact

A. Immediate doctrinal impact in the Fourth Circuit

• Framework clarity: Litigants and district courts in the Fourth Circuit now have a direct holding that “sensitive places” is a Bruen step-two question. That matters for pleading and proof: the government must assemble historical analogues; plaintiffs will focus on challenging the representativeness and temporal relevance of those sources.
• Expanded state authority over operational government property: The proprietary-property rule gives states a potent argument to defend gun bans in government-run systems and facilities that resemble managed operations (especially transit), potentially reducing the need to litigate “sensitive place” status for every sub-location.
• Limits on “private property default flips”: The decision becomes a major obstacle to laws that criminalize carrying on “private property open to the public” absent affirmative consent (unless and until the Supreme Court clarifies otherwise).

B. Broader national significance and likely litigation pressures

• Circuit tension: The opinion highlights interpretive divisions (illustrated by Judge Agee’s dissent) regarding (i) the permissible time horizon for “tradition,” (ii) the evidentiary status of territorial/municipal laws and private railroad rules, and (iii) how broadly “sensitive places” may expand without “eviscerat[ing]” public carry.
• Legislative drafting effects: Maryland’s success in several categories suggests legislatures will draft restrictions to resemble historically cognizable “notice and dispersal” mechanisms (demonstrations), to emphasize vulnerable-population rationales (healthcare), and to tie bans to government operational control (transit). Conversely, legislatures will be more cautious about “default prohibition” rules for private property open to the public.
• Second/First Amendment cross-pollination: The opinion’s methodology invites more cross-amendment borrowing (forum doctrine → proprietary Second Amendment; “peaceable assembly” → armed-demonstration restrictions), likely shaping how future courts justify location-based firearm restrictions.

4. Complex Concepts Simplified

• Bruen step one vs. step two: Step one asks whether the conduct (e.g., carrying a handgun in public for self-defense) is covered by the Second Amendment’s text as originally understood. Step two asks whether the regulation matches the nation’s historical tradition—using analogies, not exact copies.
• “Sensitive place”: A location where governments may prohibit carrying firearms consistent with the Second Amendment, but only if history and tradition support treating that place as sensitive (or analogous to an historically sensitive place).
• Facial challenge: A claim that a law is unconstitutional in all (or virtually all) applications. Under United States v. Nutter (quoting United States v. Rahimi), it is “the most difficult challenge,” because the government can win by showing constitutional applications exist.
• Standing (pre-enforcement): Plaintiffs can sue before arrest if they show a concrete intent to engage in arguably protected conduct and a credible threat of prosecution (Lujan v. Defs. of Wildlife; Susan B. Anthony List v. Driehaus; Steffel v. Thompson). The court found standing for demonstrations and for private property open to the public, but not for non-public private property (e.g., dwellings) because no plaintiff alleged intent to do that.
• Proprietary property doctrine: A concept drawn from First Amendment law: when government acts like a property owner/operator managing an enterprise (rather than regulating public space generally), it gets more leeway to impose rules. Here, the Fourth Circuit extends that idea to Second Amendment analysis for mass transit.

5. Conclusion

Kipke v. Moore supplies the Fourth Circuit’s most comprehensive post-Bruen treatment of “sensitive places,” firmly placing the doctrine at step two’s history-and-tradition inquiry and applying Rahimi’s “why/how” analogical method. The opinion is also significant for its adoption of a Second Amendment proprietary-property rule, potentially expanding the government’s ability to restrict firearms in operational systems like mass transit. At the same time, the court draws a meaningful boundary by invalidating Maryland’s private-property-open-to-the-public “permission-first” default, warning against turning most ordinary public life into de facto “sensitive places.”