Last updated November 2026 · By Nick Hall, who has followed the AR-15 cases from the cert grant to this week’s mootness filing
Quick take: Cook County wants the Supreme Court to throw out the AR-15 case against its ban, because the lead plaintiff, Cutberto Viramontes, has asked to leave it. Its own footnote admits the Court can still answer the AR-15 question through the Connecticut case, so the December 2 argument is still on.
- What happened: Cook County filed a suggestion of mootness on November 5, 2026, asking the Court to dismiss Viramontes v. Cook County as moot or as improvidently granted if Viramontes is let out.
- Why it matters: The county says the last individual challenger wants an AK-pattern IMI Galil, which it argues falls outside the AR-15 question the Court agreed to decide.
- What’s next: The Court has not ruled on the Viramontes motion or the county’s filing, and argument is still set for Wednesday, December 2, 2026.
- Who to watch: Christopher Khaya, the remaining individual petitioner, and the Connecticut challengers in the consolidated Grant v. Higgins case.
Most procedural filings at the Supreme Court are either housekeeping (word-count certificates, extensions) or noise nobody outside the building reads. This one is different, because it tries to shrink the most important gun case in years down to one man’s rifle preference. I read the filing, the motion that set it off and the docket, so here is what Cook County is asking for and why it probably doesn’t get the outcome gun owners are worried about.
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What Cook County Filed on November 5
It started on October 29. Viramontes, the Cook County resident whose name is on the case, filed a short motion under Supreme Court Rule 46.2 asking to be dismissed. It gives no reason. It says only that “This motion does not apply to any other petitioner” and that “this case remains pending as to all other petitioners.”
A week later, on November 5, Cook County State’s Attorney Eileen O’Neill Burke filed a suggestion of mootness under the Court’s Rule 21.2(b). The ask is conditional. If the Court lets Viramontes go, the county says, “the Court should dismiss the case as moot or as improvidently granted.”
That second option is the Court’s way of saying it shouldn’t have taken a case at all. Lawyers call it a DIG. And the county is reaching for it in a case the justices agreed to hear on June 30, 2026, and scheduled for argument on December 2, after a summer and fall of merits briefs from both sides.
The county also takes a shot at the motion itself. It calls it “barebones” and says “the most natural inference” is that “Viramontes’ circumstances have changed in some significant fashion.” If the challengers argue otherwise, it wants the Court to make Viramontes file a sworn declaration that he still counts.
Why the IMI Galil Is the Whole Ballgame in Viramontes v. Cook County
The Viramontes suit was filed in federal court in Chicago on August 27, 2021. By the time it reached the Supreme Court, the challengers were two individual gun owners and two groups, the Firearms Policy Coalition and the Second Amendment Foundation. Viramontes wanted, in the county’s words, “to own a Smith and Wesson Military & Police AR-15 style semiautomatic rifle.” That put him squarely inside the question the Court took: “Whether the Second and Fourteenth Amendments guarantee the right to possess AR-15 platform and similar semiautomatic rifles.”
Christopher Khaya, the other individual, never asked for an AR-15. He “wants an IMI [Industrial Military Industries] Galil semiautomatic rifle,” and back in the district court his own side amended its answer to say the gun “is not an AR-15 style rifle but is largely based on the AK-47 design.” The challengers’ August merits brief says the same thing, describing the Galil as “based on the AK-47 platform.”
The county’s argument writes itself from there. Cook County’s ban covers AK-pattern rifles too, but the Court did not take up the broader claim that the ordinance “is facially invalid under the Second Amendment.” So, the county says, Khaya has no personal stake in the question actually in front of the justices.
It piles on. The filing says there are “no record facts” on whether the Galil works like an AR-15 or is in common use, and to make the rarity point it cites a collector’s sold listing for a Galil Model 392 saying “[o]nly ~400 of these [were] imported during the 1980s.” It also quotes Khaya telling the district court he was “most likely to use [the IMI Galil] at the range, to be honest.”
Then the groups. The county says the Firearms Policy Coalition and the Second Amendment Foundation “identified only two members in all of Cook County: Viramontes and Khaya.” Knock out both men and, on the county’s theory, nobody left in the case can show a stake in the AR-15 question. Its bottom line is that “the case may no longer be a good vehicle.”
The Footnote That Keeps the AR-15 Question Alive
Here’s the kicker. Footnote 1, on the first page of the filing, reads: “The jurisdictional issue raised would not prevent the Court from deciding the question presented given that Grant v. Higgins, No. 25-566, was consolidated with this matter.”
That is Cook County conceding the point that matters most to gun owners. Grant v. Higgins is the Connecticut case, brought by Eddie Grant Jr., Jennifer Hamilton, Michael Stiefel, the Connecticut Citizens Defense League and the Second Amendment Foundation against the state’s ban. When the Court took the AR-15 question on June 30, it granted Grant on the exact question presented in Viramontes and folded the two into one hour of argument.
So the realistic worst case for the challengers is narrow. If the Court lets Viramontes out and agrees with Cook County about Khaya, the Illinois half of the fight could drop away while the Connecticut half carries the same question to a decision. If the Court disagrees, or simply sits on the filing, nothing changes at all.
I don’t think this filing kills anything. It reads like a county that would rather not be the name on the answer, and it gives the justices an easy way to keep the Connecticut half alive if they decide to trim the Illinois half. Cook County and Connecticut filed their merits briefs defending the bans on October 21, and nothing in the November 5 filing withdraws a word of that defense.
What Happens Next Before the December 2 Argument
As of the November 5 update to the Supreme Court docket, the Court had not acted on the Viramontes motion and the challengers had not filed anything in response to the county. The case is still set for argument on Wednesday, December 2, 2026.
Expect the challengers to answer, and expect the fight to be about Khaya and the two groups rather than about AR-15s. The justices can rule on the motion, ask for that declaration, take up the mootness question at argument, or leave it for the opinion.
But none of it touches the law on the ground today. Cook County’s ban on the sale, transfer and possession of what it calls assault weapons stays in force, and Illinois has its own statewide ban on top, laid out in our Illinois gun laws guide. One plaintiff walked. The question didn’t.
Frequently Asked Questions
What is Viramontes v. Cook County?
A Supreme Court case, No. 25-238, challenging Cook County, Illinois's ban on so-called assault weapons. The Court agreed on June 30, 2026 to decide whether the Second and Fourteenth Amendments protect the right to possess AR-15 platform and similar semiautomatic rifles.
Is the Supreme Court AR-15 case moot?
No court has said so. Cook County filed a suggestion of mootness on November 5, 2026, arguing the case should be dismissed if Cutberto Viramontes is allowed to leave it. Its own filing concedes the Court can still decide the AR-15 question through the consolidated Connecticut case, Grant v. Higgins.
Why did Cutberto Viramontes ask to leave the case?
His October 29, 2026 motion under Supreme Court Rule 46.2 gives no reason. It says the motion does not apply to any other petitioner and that the case remains pending as to all of them.
What does dismissed as improvidently granted mean?
It means the Supreme Court decides it should not have taken the case after all and dismisses it without ruling on the question presented. The lower court decision is left in place.
What is Grant v. Higgins?
The Connecticut challenge to that state's assault weapons ban, No. 25-566, from the Second Circuit. The Supreme Court granted it on the same AR-15 question as Viramontes and consolidated the two cases for one hour of oral argument.
Why does it matter that the remaining plaintiff wants a Galil?
Cook County says the IMI Galil is AK-based, not an AR-15-style rifle, and the challengers described it the same way. Because the question presented is limited to AR-15 platform and similar rifles, the county argues that plaintiff has no stake in the question the Court took.
When is the Supreme Court AR-15 argument?
The consolidated cases are set for argument on Wednesday, December 2, 2026. Nothing on the docket had changed that date as of November 5, 2026.
Is the Cook County assault weapons ban still in effect?
Yes. The ban on the sale, transfer and possession of covered rifles stays in force while the Supreme Court case is pending, and Illinois has its own statewide ban under 720 ILCS 5/24-1.9.
Related Reading
- Supreme Court Takes the AR-15 Question Head On
- Cook County and Connecticut Defend AR-15 Bans at SCOTUS
- 18 States and DC Back AR-15 Bans at the Supreme Court
- Colorado SB25-003 Permit Law Survives Injunction Bid
- Connecticut Gun Laws: Permits, Carry Rules and Restrictions
- Illinois Gun Laws: FOID Card, CCL and the Assault Weapons Ban
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