The Daily Fuckup

The Justice Department has opened a new front in the national fight over gun regulations, filing a federal lawsuit that targets Colorado’s law limiting large-capacity magazines. The complaint, filed May 6 in U.S. District Court for the District of Colorado, names the State of Colorado and the Colorado Department of Public Safety as defendants and asks a federal judge to block enforcement of the statute. At issue is a restriction that generally applies to magazines holding more than 15 rounds, a limit that has been part of Colorado law since 2013. Federal lawyers say the state has gone too far and that the law cannot stand under the Second Amendment. Colorado, for its part, now faces the task of defending a decade-old restriction in a federal forum where the constitutional standard has become increasingly contested.

The Justice Department is seeking both declaratory and injunctive relief, which means it wants the court not only to declare the law invalid but also to order the state to stop enforcing it. In the filing, federal attorneys argue that the magazine cap burdens conduct protected by the Constitution and that the state lacks authority to prohibit possession of the magazines covered by the law. The complaint presents the issue as one of constitutional protection rather than policy preference, framing the magazines as arms that cannot be banned simply because lawmakers view them as too dangerous or too common in certain crimes. That position reflects a broader gun-law strategy in which federal officials have become more willing to press aggressive challenges to state restrictions, especially after recent Supreme Court decisions heightened scrutiny of firearm regulations. The Colorado case follows that pattern and could become a test of how far states can go when they seek to limit the size of ammunition feeding devices. If the government prevails, the decision could further narrow the room available for state magazine bans. If Colorado succeeds, it would reinforce the authority of states to preserve some of the more familiar limits enacted in the last generation.

Colorado’s statute has already been litigated, but not on the precise federal question now before the court. The Colorado Supreme Court previously upheld the law against a challenge brought under the Colorado Constitution, leaving the federal Second Amendment issue unresolved. That distinction matters because state constitutional analysis can differ from the federal standard, and a state court’s approval on one ground does not necessarily settle every possible challenge. In other words, the law survived one round of attack, but it did not receive a definitive ruling on whether it aligns with the U.S. Constitution. The new lawsuit gives opponents of the magazine limit another opportunity to argue that the statute cannot survive modern Second Amendment review. It also forces Colorado to defend the law in a setting where federal judges will likely look closely at history, tradition and the scope of protected arms, as required by current constitutional doctrine. That framework has become central to gun litigation nationwide and has made even longstanding restrictions vulnerable to renewed challenges. The outcome in Colorado will likely depend on how the court interprets that evolving standard and how it views the government’s claim that magazines over 15 rounds fall within constitutional protection.

For Colorado officials, the lawsuit threatens to reopen a debate that has lingered for years. The state adopted the magazine limit in 2013, joining a small but significant group of states that have tried to regulate the capacity of firearms magazines as part of a broader public-safety approach. Supporters of such laws generally argue that restricting higher-capacity magazines may reduce the number of rounds fired before a shooter has to reload, potentially limiting the scale of harm in an attack. Opponents counter that the devices are common, lawful accessories and that bans do little to deter crime while burdening ordinary gun owners. The federal complaint does not resolve those policy arguments, but it signals that the administration is prepared to challenge state laws it sees as inconsistent with the Constitution. The case now moves into federal court, where lawyers on both sides will likely present competing views of the text, history and practical effects of the restriction. For the moment, Colorado’s law remains on the books, but its future will depend on whether the court accepts the government’s argument that the magazine cap crosses a constitutional line. The lawsuit underscores how unsettled the law of firearms regulation remains, even for measures that have been in place for years and have already survived some level of judicial review.