Eleven governors are asking the U.S. Supreme Court to preserve state and local authority to restrict certain semiautomatic rifles. The Dec. 2 hearing could affect New York’s assault weapons ban and similar laws nationwide.
The New York assault weapons ban will be part of a major constitutional test when the U.S. Supreme Court hears two consolidated gun-rights cases this winter.
Gov. Kathy Hochul announced Wednesday that New York joined 10 other governors in an amicus, or friend-of-the-court, brief supporting Connecticut and Cook County, Illinois. Those governments are defending laws that restrict possession of certain semiautomatic rifles, including AR-15-style rifles with specified features.
The ongoing discussions surrounding the New York assault weapons ban highlight the increasing tension between state regulations and federal constitutional rights.
The governors filed through GovAct’s Safer Communities Initiative. Their brief does not make them parties to the cases, and it does not decide the outcome. It gives the justices their view of the constitutional question and the public-safety consequences.
For Mohawk Valley residents, the issue is not limited to Washington. A broad ruling could change what the New York assault weapons ban may regulate, affect gun owners and dealers, and shape how state and local officials respond to gun violence.
What the Supreme Court will decide
The cases are Viramontes v. Cook County, docket 25-238, and Grant v. Higgins, docket 25-566. The Court consolidated them on June 30, 2026. The official question is whether the Second and Fourteenth Amendments protect a right to possess AR-15-platform and similar semiautomatic rifles.
The cases reached the Court from different federal appeals courts. Viramontes comes from the Seventh Circuit and challenges Cook County’s ordinance. Grant comes from the Second Circuit and challenges Connecticut’s restrictions.
Arguments are set for Dec. 2
The Court’s published calendar schedules one hour of consolidated oral argument for Wednesday, Dec. 2. No decision date has been announced. The Court could write a narrow ruling about the laws before it or a broader decision that changes the legal test for other state and local restrictions.
The exact scope will matter. New York is not a defendant in either case, but its law also regulates semiautomatic firearms based on listed military-style features. A ruling against Connecticut and Cook County could lead to new challenges against New York’s law. It would not automatically erase every state rule unless the Court’s reasoning reaches that far.
What the governors argue
The governors’ brief argues that states have long used their police powers to regulate weapons and protect public safety. According to Hochul’s office, the coalition says the restrictions are constitutional, save lives and respond to costs that states bear after mass shootings, including hospital care and victim services.
Hochul tied the filing to the racist 2022 mass shooting at a Buffalo supermarket. Ten Black people were killed in that attack. “Our gun laws work,” she said in the state’s announcement, adding that the cases put laws and lives at stake. That is the governor’s position, not a finding by the Court.
The state announcement also says an adverse decision could invalidate similar laws around the country and make future gun-safety measures harder to enact. That is a possible legal consequence, but it depends on how broadly the justices rule.
What the challengers argue
The gun owners challenging the laws frame the issue differently. They argue that AR-15-platform and similar semiautomatic rifles are commonly possessed for lawful purposes and therefore cannot be banned under the Second Amendment.
That argument relies heavily on the Supreme Court’s modern gun-rights cases, including District of Columbia v. Heller and New York State Rifle & Pistol Association v. Bruen. Those decisions protect an individual right to keep and bear arms and require courts to examine the nation’s historical tradition of firearm regulation.
Connecticut and Cook County respond that legislatures may regulate weapons they consider especially dangerous and that historical laws support restrictions on weapons that create unusual public danger. Connecticut Attorney General William Tong says his state’s ban dates to 1993 and was expanded after the 2012 Sandy Hook school shooting. Lower courts upheld the Connecticut law before the Supreme Court agreed to review the cases.
The justices will have to decide how the “common use” concept and the history-and-tradition test apply to these rifles. That legal dispute is separate from whether individual lawmakers or readers believe the policies are wise.
What research says, and what it cannot prove
Hochul’s announcement cites a peer-reviewed study of U.S. counties from 2014 through 2022. Researchers reported that counties in states with assault-weapons bans had a 41 percent lower incidence of mass-shooting fatalities than counties in states without such bans. They also found that incidents identified as involving AR- or AK-pattern firearms were more likely to have a high fatality rate.
The study describes an association. It does not prove that the bans alone caused the difference. County conditions, enforcement, other gun laws and the small number of mass-shooting events can affect results.
A separate RAND review has described the overall evidence on whether assault-weapons bans reduce mass shootings as inconclusive. RAND found limited evidence for some related policies, including restrictions on large-capacity magazines. Taken together, the research supports continued study but does not settle the constitutional question before the Court.
How New York defines an assault weapon
New York does not ban every semiautomatic rifle. State guidance says the definition depends on a firearm’s operating system, ammunition capacity and listed features. The rules cover certain semiautomatic rifles, pistols and shotguns. Most ordinary hunting firearms are not affected, according to the state’s gun-owner resource page.
New York also generally limits magazines to 10 rounds. Rules can differ for firearms lawfully owned before restrictions took effect, transfers and registration. Anyone making a purchase, sale, transfer or modification should check the current state guidance and seek qualified legal advice. The Phoenix cannot determine whether a particular firearm is legal.
The state says it has committed more than $4 billion to public-safety efforts, including more than $1 billion for gun-violence prevention. Hochul’s office also reports a 67 percent decline over five years in shooting incidents involving injury across the 28 police jurisdictions participating in the Gun Involved Violence Elimination initiative. Those are administration figures and do not isolate the effect of any one law.
Other recent state actions include expanding extreme-risk protection orders, revising concealed-carry rules after Bruen, coordinating an interstate gun-trafficking task force, responding to federal gun-policy changes, targeting untraceable firearms and strengthening safe-storage and ammunition-purchase requirements.
Why this matters in the Mohawk Valley
The Court’s answer could reach beyond the firearms named in these cases. It may influence future challenges to New York licensing, possession and sales rules, as well as the legal options available to state lawmakers after a mass shooting.
For lawful gun owners, the case could clarify whether rifles in common civilian ownership receive stronger constitutional protection. For violence-prevention groups and local governments, it could determine whether states retain room to respond to local risks with firearm-specific laws.
Residents can follow the case through the Supreme Court docket, which includes briefs and later orders. New York’s official gun-safety site has current information for owners, dealers and families. For immediate threats, call 911. Firearms should be stored unloaded, locked and separate from ammunition, especially in homes with children or anyone at risk of self-harm.
What happens next
The parties will complete briefing before the Dec. 2 argument. The justices may ask about how common the rifles are, whether they are typically used for lawful purposes, which historical weapons laws are comparable and how much deference legislatures receive when they respond to modern firearm technology.
A written decision will follow after argument. Until then, New York’s current restrictions remain in effect. Residents should not treat the Court’s decision to hear the cases as a ruling on the merits.
Related Phoenix coverage
- New York gun-safety laws expand storage and ammunition checks
- New York responds to federal gun-policy rollbacks
- Supreme Court upholds a New York gun-safety provision
Sources and reader resources
- New York Governor’s Office announcement, Oct. 28, 2026
- U.S. Supreme Court docket for Viramontes v. Cook County
- Supreme Court December 2026 argument calendar
- Connecticut Attorney General’s case summary
- Peer-reviewed county study in Injury Prevention
- RAND evidence review on assault-weapons bans and mass shootings
- New York resources for gun owners
How would a broad Supreme Court ruling affect your family, community organization or work in the Mohawk Valley? Share a factual local perspective in the comments, and avoid posting personal firearm locations or other sensitive details.
