The Supreme Court is set to hear oral arguments in December regarding bans on so-called assault weapons, but two key jurisdictions—Connecticut and Cook County, Illinois—have already filed their written defenses supporting these restrictions. Their briefs rely on legal precedents and historical interpretations to justify prohibiting commonly owned semi-automatic rifles such as AR-15s.
Legal Foundations Cited to Uphold Bans
Both Connecticut and Cook County base their arguments largely on rulings from the Second and Seventh Circuit Courts, which have upheld bans on centerfire semi-automatic firearms. They contend that these weapons are “unusually dangerous” and thus fall outside the scope of the Second Amendment’s protections. The briefs argue that the bans respond to new dangers arising from technological advances and societal changes, positioning the firearms as distinct from historically protected arms despite their widespread ownership.
Connecticut’s filing emphasizes that throughout American history, governments have banned weapons deemed excessively lethal when their popularity posed immediate threats to public safety. The brief cites examples like the launcegay and Bowie knife—both common in their eras but subject to restrictions—arguing that legislative authority to regulate such arms has long existed and was not lost simply because the weapons were widely owned.
Disputes Over Historical Analogues and Self-Defense
Cook County’s brief notably references restrictions on Bowie knives and other weapons, attempting to draw parallels to the modern bans on semi-automatic rifles. However, critics note that nineteenth-century firearms such as Colt revolvers and Winchester repeaters represented significant technological leaps yet were never banned, raising questions about the consistency of these historical comparisons.
Another point of contention lies in the interpretation of the Second Amendment’s scope. While the Supreme Court has affirmed that self-defense is a core component of the right to bear arms, it also recognizes “traditionally lawful purposes” in the plural. Cook County, however, suggests self-defense is the sole valid reason for firearm ownership and argues that AR-15s and similar rifles are rarely used or suitable for this purpose.
Challenges to the “Unusually Dangerous” Standard
Connecticut’s argument hinges on distinguishing firearms based on their danger level rather than their commonality. The brief points to the Court’s stance on stun guns and machine guns, suggesting that while both may be owned at comparable rates, machine guns are banned due to their unusual danger. However, this interpretation is disputed, as the Court has not definitively ruled on the constitutionality of stun gun bans or fully endorsed machine gun prohibitions.
This rationale raises broader questions about where the line is drawn. If semi-automatic long guns are considered too dangerous because of their firing speed and accuracy, what about semi-automatic handguns or multi-shot revolvers, which also represent advances over earlier firearms like muskets? The briefs do not fully address these complexities, leaving open the possibility that many commonly owned firearms could be subject to future bans under the “unusually dangerous” criterion.
Historical Regulations Versus Prohibitions
The briefs also blur distinctions between regulations and outright prohibitions. While some historical laws imposed taxes or restrictions on weapons such as Bowie knives or small handguns, complete bans were rare and often short-lived. For example, an exorbitant tax on handguns cited by Connecticut was eliminated by the 1850s. Such nuances challenge the use of these historical examples as direct analogues for modern assault weapon bans.
Claims About Convertibility and Broader Implications
Cook County further asserts that AR-15s are “readily convertible” to machine guns, a claim echoed by gun control advocates in recent civil litigation. However, the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) has never classified semi-automatic rifles or handguns as readily convertible to fully automatic firearms, despite decades of regulatory oversight. Accepting this argument could potentially subject nearly all semi-automatic firearms to stringent National Firearms Act restrictions, a prospect unlikely to gain Supreme Court approval.
Ultimately, both Connecticut and Cook County appear to target more than just the AR-15 platform. Their legal reasoning could be applied to a wide range of semi-automatic firearms, which constitute the majority of guns owned in the United States.
Conclusion
As the Supreme Court prepares to weigh the constitutionality of assault weapon bans, the defenses submitted by Connecticut and Cook County underscore the ongoing debate over the Second Amendment’s limits. Their arguments focus on the perceived unusual danger posed by semi-automatic rifles and the historical precedent for regulating such weapons. However, questions remain about the consistency of these historical analogues, the interpretation of self-defense rights, and the potential breadth of future firearm restrictions. The Court’s upcoming decision will have significant implications for gun rights and regulation nationwide.
Source: Read the original reporting.


