What Happened?
Solicitor General D. John Sauer has formally notified Senate Judiciary Chairman Chuck Grassley that the Department of Justice will not appeal the Northern District of Texas ruling in Silencer Shop Foundation v. ATF. The September 24, 2026 letter, filed in court on October 1, closes the government’s ordinary path to reverse a judgment that stripped National Firearms Act registration and advance-approval requirements from suppressors, short-barreled rifles, short-barreled shotguns, and certain other weapons for the parties the court protected.
The notice does not repeal the NFA. It does not create a nationwide injunction. It does lock in, for this administration, a permanent order that the registration scheme cannot be enforced against covered plaintiffs, their members, and their customers once Congress reduced the making and transfer taxes on those items to zero. For a statute that has governed suppressors and short barrels since 1934, that is the largest practical change in ninety years.
The Letter and the Duty to Tell Congress
Sauer’s letter is dated September 24, 2026, and is addressed to Chairman Charles Grassley of the Senate Committee on the Judiciary. It opens with the sentence the statute requires: consistent with 28 U.S.C. § 530D, the Solicitor General writes to advise that the Department of Justice has determined not to file an appeal in Silencer Shop Foundation v. ATF, No. 6:25-cv-00056 (N.D. Tex.).
Section 530D is not optional courtesy. When the Justice Department decides not to defend or appeal a ruling that a federal statute is unconstitutional, the Attorney General, through the Solicitor General, must notify Congress. The letter encloses the district court’s decision and summarizes why the department is standing down. It was docketed on October 1, 2026, the same day Gun Owners of America and the NRA circulated it. President Trump had already directed the department not to appeal, according to reporting in mid-September. Sauer’s notice is the formal commitment.
The letter is careful about scope. It states that Judge James Wesley Hendrix entered summary judgment for the plaintiffs, held that specified NFA provisions are unconstitutional as applied to short-barreled shotguns, short-barreled rifles, silencers, and “any other weapons,” and issued a permanent injunction against enforcement of those provisions as to “the plaintiffs and, where applicable, the plaintiffs’ agencies, political subdivisions, members, and customers.” It also records what the court did not do. The injunction does not reach machine guns or destructive devices, where the transfer and making taxes still apply, and it does not reach the special occupational tax on NFA importers, manufacturers, and dealers.
How the Case Reached This Point
The National Firearms Act of 1934 imposed a $200 tax on the making or transfer of certain firearms, paired with registration, fingerprinting, photographs, and advance approval by what is now the Bureau of Alcohol, Tobacco, Firearms and Explosives. The Supreme Court upheld that structure in Sonzinsky v. United States in 1937 as an exercise of the taxing power, not as a freestanding gun regulation. For decades the tax and the registry traveled together. The $200 figure never kept pace with inflation in a way that restored its original bite, but the paperwork, the wait, and the federal registry remained.
In 2025, Congress changed the premise. Section 70436 of the One Big Beautiful Bill Act, Public Law 119-21, eliminated the making and transfer taxes on suppressors, short-barreled rifles, short-barreled shotguns, and AOWs, effective January 1, 2026. The registration and approval machinery stayed on the books. Senators Cynthia Lummis and Mike Crapo had pressed for the tax repeal. Gun-rights groups immediately argued that a tax statute with no tax left to collect could not keep its regulatory appendages.
Silencer Shop Foundation filed in the Northern District of Texas in October 2025. A related case, Jensen v. ATF, was consolidated with it. The plaintiffs included individuals, Silencer Shop Foundation, Gun Owners of America and the Gun Owners Foundation, the Firearms Regulatory Accountability Coalition, manufacturers and dealers such as Palmetto State Armory, SilencerCo Weapons Research, and B&T USA, the Texas State Rifle Association, the Citizens Committee for the Right to Keep and Bear Arms, the FPC Action Foundation, and fifteen states: Alaska, Georgia, Idaho, Indiana, Kansas, Louisiana, Montana, North Dakota, Oklahoma, South Carolina, South Dakota, Texas, Utah, West Virginia, and Wyoming.
On August 5, 2026, Judge Hendrix granted summary judgment on the enumerated-powers claims and entered a permanent injunction. He stayed the judgment for seven days so the government could seek appellate relief. That stay expired, and the injunction took effect on August 13. Covered suppressor transfers on a standard Form 4473, without a Form 4, began the same day. The United States had until about October 5, 2026, to notice an appeal. It will not.
What Judge Hendrix Actually Held
The opinion is an enumerated-powers decision, not a Second Amendment decision. The court did not need to reach the Bruen claim because the taxing-power and commerce-power arguments were enough.
Hendrix held that the challenged provisions — including 26 U.S.C. §§ 5812, 5822, 5841, and related rules in 27 C.F.R. part 479 — were enacted as aids to a tax. Once Congress set the making and transfer taxes to zero, those provisions no longer produced revenue and no longer functioned as a tax. They therefore could not be sustained under Article I, Section 8, Clause 1. The government then tried to rescue them under the Commerce Clause. The court rejected that move. Congress had never invoked the commerce power for this scheme, and the registration rules were not a regulation of interstate commerce in the sense Article I requires. The opinion’s blunt line, quoted in the Solicitor General’s summary of the judgment, is that Congress’s choice to eliminate the taxes matters, and the defendants cannot save the regulatory scheme by pointing to a power Congress never invoked.
The injunction bars enforcement of the registration, application, and related possession provisions against the protected parties. It does not wipe the NFA off the statute books. It does not excuse the Gun Control Act. A covered buyer still completes Form 4473 and still clears the National Instant Criminal Background Check System. What disappears, for those buyers, is the NFA application, the fingerprint cards, the photograph package, the advance ATF approval, the entry in the NFA registry, and the wait that those steps imposed.
Who the Injunction Covers, and Who It Does Not
This is the point Sauer’s letter is explicit about, and the point most commentary flattens. The injunction is party-specific. It is not a nationwide vacatur of the NFA.
Protected persons include the named individual plaintiffs; current and future members of the associational plaintiffs, including Gun Owners of America, the Gun Owners Foundation, FRAC, the Texas State Rifle Association, the Citizens Committee for the Right to Keep and Bear Arms, the FPC Action Foundation, and Hot Shots Custom on the Jensen side; and current and future customers of the commercial plaintiffs, including Silencer Shop, Palmetto State Armory, SilencerCo Weapons Research, and B&T USA. The order also reaches the plaintiff states and, where applicable, their agencies and political subdivisions. Judge Hendrix wrote that coverage extends to current and future members and customers, so joining a covered organization or buying through a covered dealer is not limited to people who were members on August 5.
The items covered are suppressors, short-barreled rifles, and short-barreled shotguns. Any-other-weapon relief attaches to the Silencer Shop Foundation side of the case, not the Jensen side. Machine guns and destructive devices remain fully under the NFA, because Congress did not zero the tax on those categories. The special occupational tax and the dealer licensing structure for NFA businesses are outside the injunction.
For everyone else, the NFA registration scheme remains enforceable. A buyer who is not a member of a covered group, not a customer of a covered seller, and not otherwise tied to a plaintiff still faces Form 1 or Form 4 processing, even though the tax itself is already zero. That split is the live question ATF has not answered in writing.
What the Decision Not to Appeal Means in Practice
Declining to appeal does three things at once.
First, it makes the injunction permanent for this administration. A later administration could try to relitigate related questions, or Congress could amend the statute, but the United States will not ask the Fifth Circuit to reverse Hendrix’s judgment. The appeal window closes without a government notice of appeal. Groups that called the outcome permanent are describing that procedural fact, not a constitutional amendment.
Second, it confirms the direction President Trump gave the department after the August ruling. CBS News reported in September that the President had ordered the Justice Department not to contest the decision and had told Republican members of Congress he would keep the department from appealing. Senator Lummis publicly credited that choice, and the tax repeal she and Senator Crapo secured, as the reason the case could be won. Sauer’s letter is the institutional record of the same decision.
Third, it shifts the fight from the courthouse to implementation. ATF Director Robert Cekada has said, in substance, that the bureau is not enforcing the registration rules against covered parties. Dealers have received verbal guidance that 4473 suppressor transfers for covered buyers are not being cited. Written guidance was still pending in the first days of October 2026. On October 1 the department asked Judge Hendrix for more time to respond to plaintiff states seeking clarification of how the injunction applies inside their borders. The court extended that deadline to October 12, with the department citing the no-appeal decision and forthcoming ATF instructions.
For a covered buyer of a suppressor, the working path since mid-August has been a standard 4473 and a NICS check, without a Form 4 and without an NFA registry entry. Short-barreled rifles and shotguns are messier. Separate Gun Control Act language still speaks of Attorney General authorization for certain short-barreled transfers, and dealers have been cautious about treating a pure 4473 as enough until ATF says so in writing. Interstate transport raises a related problem under 26 U.S.C. § 5861, which penalizes transporting an unregistered NFA firearm. A suppressor or short barrel acquired under the injunction is unregistered by design. Covered owners should confirm coverage in writing with the organization or dealer they rely on, and should get specific advice before carrying the item across state lines.
The Limits That Remain
Several limits are easy to miss in the victory statements.
State law is untouched. A state that bans suppressors, restricts short-barreled rifles, or imposes its own registration still applies that law to its residents and to conduct inside its borders. The injunction restrains federal defendants. It does not bind state police or state prosecutors.
The Gun Control Act still applies in full. Prohibited persons remain prohibited. Dealers remain licensed. Background checks remain mandatory for commercial transfers. Nothing in Hendrix’s order, or in Sauer’s letter, creates an unregulated market.
The injunction does not bind non-parties in the way a universal remedy would. A future Justice Department that wanted to enforce the NFA against uncovered buyers would not be in contempt of this order. That is why industry groups and members of Congress have pressed ATF to apply the ruling more broadly by guidance or rulemaking, and why some dealers have warned customers that a 4473-only transfer can complicate warranties, travel, and resale if coverage is later disputed.
Machine guns, destructive devices, and the NFA special occupational tax sit outside the judgment. Anyone describing this as the end of the National Firearms Act is describing a political goal, not the order that was entered.
Why the Taxing-Power Theory Mattered
The case turned on a feature of the NFA that gun-control advocates have spent years trying to forget. Congress did not pass the 1934 Act as a commerce regulation of dangerous weapons. It passed it as a tax, because that was the enumerated power available, and the Supreme Court upheld it on that ground. Registration existed to make the tax enforceable. When Congress zeroed the tax and left the registry, it separated the accessory from the power that justified it.
Hendrix refused to let the government re-label the leftover paperwork as a commerce regulation after the fact. That holding is narrower than a Second Amendment ruling, and in some ways sturdier for the parties who won it. A later court does not have to relitigate whether a suppressor is an arm, or whether a short-barreled rifle is in common use, to understand why a zero-dollar tax cannot support a federal registry. The government, by declining to appeal, has accepted that framing for this case.
The same theory explains why the opinion stops where it stops. Categories that still carry a tax were not in front of the court on this claim. A future Congress that restored a real tax could argue that Sonzinsky is back in force. A future Congress that repealed the remaining registration rules outright would not need this injunction at all.
What Comes Next
ATF’s written guidance is the immediate practical gap. Buyers, dealers, and the plaintiff states need a document that says who may transfer on a 4473, how a dealer confirms coverage, how short-barreled rifles are supposed to move, and whether an item acquired under the injunction can travel. Until that paper exists, verbal assurances and organization membership cards are doing work the statute used to do.
The plaintiff states’ clarification motion will force a clearer map of the injunction inside the fifteen states that sued, Indiana among them. A ruling or a stipulated reading on whether state agencies and in-state transfers are fully covered would reduce the patchwork dealers are navigating now.
Outside the injunction, the political question is whether Congress finishes the job. The tax is already zero. The registry survives for anyone the order does not reach. Bills to delete the remaining NFA entries for suppressors and short barrels, or to codify Hendrix’s line, would matter more than another round of litigation against a department that has already refused to appeal. Parallel cases in other circuits could still produce conflicting judgments about uncovered parties. Those conflicts would return the issue to the appellate courts even though this particular judgment will not.
For covered owners the near-term meaning is simpler. The Solicitor General has told the Senate, under a statute written for exactly this moment, that the United States will not ask a higher court to put the registry back in place against them. The August 5 judgment stands. The Form 4, for those buyers and those items, is not coming back through this case.