The Department of Justice expanded its Second Amendment lawsuit against Washington, DC, on Thursday, adding a direct challenge to the District's ban on firearm suppressors, a move that widens the federal government's legal offensive against some of the most restrictive gun laws in the country.
The DOJ's Civil Rights Division amended its complaint on May 14, 2026, folding the suppressor challenge into an existing suit that already targets the District's AR-15-related restrictions. The original lawsuit, first reported in December 2025, focused on DC's controls on AR-15-platform rifles. Now the DOJ is going further, arguing that DC's categorical suppressor ban under D.C. Code ยง 22, 4514(a) violates the Second Amendment.
The amended complaint does not mince words. It states that suppressors "are also in common use by law-abiding Americans and categorically banning them violates the Second Amendment." The filing invokes the Supreme Court's 2022 decision in New York State Rifle & Pistol Association v. Bruen, the landmark ruling that requires gun regulations to be consistent with the nation's historical tradition of firearms regulation.
DC's code defines suppressors as devices "for causing the firing of any firearm to be silent or intended to lessen or muffle the noise of the firing of any firearms." The District bans them outright. Suppressors are regulated at the federal level under the National Firearms Act, but DC goes well beyond federal regulation by prohibiting them entirely.
The DOJ's complaint argues that under the Bruen framework's "plain text" analysis, the Second Amendment "extends, prima facie, to all instruments that constitute bearable arms, even those that were not in existence at the time of the founding." The filing adds that this protection covers "all modern instruments that facilitate armed self-defense", and that suppressors "fall within this category."
The conclusion is blunt:
"The District cannot rebut the presumption of unconstitutionality, because there is no historical tradition analogous to a ban on an arm in common use."
That is a direct application of the test the Supreme Court set in Bruen. Under that framework, it is not enough for a government to claim a public-safety rationale. It must show a historical analogue, a tradition of similar regulation stretching back to the founding era. The DOJ is telling the court that DC cannot meet that standard.
The DC suppressor challenge is not happening in isolation. The Justice Department has been filing a string of Second Amendment suits in recent weeks. Breitbart News reported that the DOJ filed a lawsuit against Denver's "assault weapons" ban on May 5, 2026, and another against Colorado's ban on magazines holding more than 15 rounds just one day later, on May 6.
The New York Times noted that the DOJ has argued that controls targeting AR-15s and similar rifles through "assault weapons" bans are "based on little more than cosmetics, appearance, or the ability to attach accessories." That framing cuts to the heart of a long-running conservative critique: that so-called assault weapons bans regulate firearms based on how they look, not how they function.
This aggressive posture from the Civil Rights Division fits a pattern. The Trump-era Justice Department has undergone significant leadership changes and has moved forcefully on a range of fronts, from gun rights to immigration enforcement.
The DOJ has also made hardline personnel decisions in other politically charged areas. The department fired four prosecutors over alleged bias in FACE Act cases involving pro-life activists, signaling a willingness to clean house when it sees institutional resistance to the administration's priorities.
Suppressors, often called "silencers" in popular culture, though that term overstates what they do, reduce the sound of a gunshot. They do not make firearms silent. A suppressed rifle still produces noise well above safe hearing levels. Hunters, sport shooters, and firearms instructors commonly use them to protect their hearing and reduce noise complaints at ranges.
Forty-two states allow civilian ownership of suppressors under federal law. Buyers must pass a background check, pay a $200 tax stamp, register the device with the Bureau of Alcohol, Tobacco, Firearms and Explosives, and wait, often for months, for approval. DC is among a handful of jurisdictions that ban them regardless of federal compliance.
The DOJ's argument that suppressors are "in common use by law-abiding Americans" is a factual claim with legal significance. Under the Bruen test, arms in common lawful use receive presumptive Second Amendment protection. If the court accepts the DOJ's characterization, the burden shifts entirely to DC to produce a historical analogue justifying the ban.
The department has also been active on immigration enforcement, reassigning attorneys who ran a program helping illegal immigrants fight deportation, another example of the DOJ aligning its legal resources with the administration's stated priorities.
The amended complaint raises several questions the available record does not yet answer. The specific court handling the case is not identified in the complaint's public reporting. The relief the DOJ is seeking, whether an injunction, declaratory judgment, or both, has not been detailed. And DC officials have not yet issued a public response to the expanded lawsuit.
The legal landscape is shifting fast. The Bruen decision reshaped Second Amendment litigation nationwide, and lower courts are still working through its implications. DC's gun laws have been a recurring target since the Supreme Court's 2008 Heller decision, which struck down the District's handgun ban. The city has a long history of passing restrictive firearms laws and then defending them through protracted litigation.
Not every DOJ action has been without controversy. The department has faced criticism from multiple directions, including from Republican members of Congress unhappy with its handling of sensitive files. But on Second Amendment enforcement, the Civil Rights Division appears to be pressing forward with a clear theory of the case and an expanding list of targets.
The broader pattern is hard to miss. Denver, Colorado, and now DC, all jurisdictions governed by leaders who have made restrictive gun laws a point of political identity. The DOJ is testing whether those laws can survive the constitutional standard the Supreme Court laid down in Bruen. Early indications suggest the department believes they cannot.
For years, DC treated the Second Amendment as a suggestion. The DOJ is now treating it as law.