Full Breakdown
DOJ Sues Colorado and Denver Over Magazine and Assault-Weapon Bans
5/7/2026, 6:51:33 AM
Core Event
On May 5-6 2026 the U.S. Department of Justice (DOJ) filed two federal lawsuits: one against the State of Colorado challenging its ban on “large-capacity” magazines (more than 15 rounds) and a second against the City of Denver contesting its 1989 assault-weapon ordinance. The DOJ alleges both measures violate the Second Amendment because the prohibited magazines and rifles are “in common use for lawful purposes” by law-abiding citizens.
Background & Context
Colorado’s magazine ban was enacted in 2013 after the 2012 Aurora theater shooting, where the gunman used a high-capacity magazine. The state’s assault-weapon ban dates to 1989, a response to earlier mass-shooting concerns. The Colorado Supreme Court upheld the magazine ban in 2020 under the state constitution, but the federal suit argues the ban conflicts with the U.S. Constitution. Recent mass-shootings in the state—including Columbine (1999), Aurora (2012), Boulder (2021) and Colorado Springs (2022)—have kept the issue politically salient.
Timeline
- 1999-2022: Multiple high-profile mass shootings in Colorado.
- 2013: State passes magazine ban (<= 15 rounds).
- 2020: Colorado Supreme Court upholds the ban.
- April 2025: Gov. Jared Polis signs a tightening of the magazine law.
- May 5 2026: DOJ sues Colorado over the magazine ban.
- May 6 2026: DOJ sues Denver over its assault-weapon ordinance.
Key Figures & Groups
- Harmeet K. Dhillon, Assistant Attorney General, DOJ Civil Rights Division – leads the Second Amendment Section.
- Todd Blanche, Acting Attorney General, DOJ – announced the Denver suit.
- Phil Weiser, Colorado Attorney General – defends the state law.
- Mike Johnston, Mayor of Denver – opposes federal action.
- Ron Thomas, Denver Police Chief – cites low recovery rates of assault weapons.
- Rocky Mountain Gun Owners and the Second Amendment Foundation – support the DOJ’s position.
- Josh Koskoff, attorney for Sandy Hook families – criticizes the lawsuit.
Data & Statistics
- The statutes define “large-capacity” as magazines holding > 15 rounds.
- DOJ claims “hundreds of millions” of such magazines are owned by law-abiding Americans; a Daily Caller report cites 448 million detachable rifle magazines of 30 rounds or more in the market.
- Denver recovered 2,100 guns in 2023, with < 2 % classified as assault-style.
- AR-15-style rifles, the most popular semi-automatic rifles, are central to both suits.
Why It Matters
The lawsuits pit federal civil-rights enforcement against state and municipal gun-control regimes, testing the scope of the Second Amendment after the Supreme Court’s 2022 *Bruen* decision. Outcomes could reshape nationwide firearm-regulation policy and set precedent for future challenges to state-level restrictions.
Official Statements & Responses
- DOJ (Dhillon): The ban is “political virtue signaling” that infringes constitutional rights.
- DOJ (Blanche): “The Constitution is not a suggestion and the Second Amendment is not a second-class right.”
- Colorado AG (Weiser): The suit is a “dangerous overreach” that endangers public safety; large-capacity magazines “decrease the deadly impacts of mass shootings.”
- Denver Mayor (Johnston): “Our answer is hell no,” emphasizing the city’s duty to protect residents.
Criticism & Opposition
Families of mass-shooting victims, represented by attorney Josh Koskoff, argue the lawsuit ignores the trauma of events like Sandy Hook, stating, “Not one of them will tell you their community needed easier access to a weapon of war.” Gun-rights groups such as the Second Amendment Foundation praise the DOJ’s action as a defense of constitutional freedoms.
Conflicting Reports & Gaps
- Ownership Numbers: DOJ cites “tens of millions” of owners; the Daily Caller cites 448 million magazines in circulation.
- Policy Impact: Colorado officials claim the bans reduce mass-shooting fatalities, while the DOJ contends they merely restrict lawful arms.
- Legal Standard: The suit relies on *Heller* (2008) and *Bruen* (2022), but the Colorado Supreme Court’s 2020 decision applied state-level analysis, leaving the federal-state interaction unresolved.
Verbatim Quotes
- “Colorado’s ban on certain magazines is political virtue signaling at the expense of Americans’ constitutional right to keep and bear arms.” — Harmeet K. Dhillon, Assistant Attorney General, DOJ
- “The Constitution is not a suggestion, and the Second Amendment is not a second-class right.” — Todd Blanche, Acting Attorney General, DOJ
- “Large-capacity magazine laws are responsible policies that satisfy Second Amendment protections, decrease the deadly impacts of mass shootings, and save lives.” — Phil Weiser, Colorado Attorney General
- “We’re here today to let them know that our answer is hell no.” — Mike Johnston, Mayor of Denver
- “Ask the parents of the first-graders killed in Sandy Hook. Ask the families in Uvalde, Highland Park, and Buffalo. Not one of them will tell you their community needed easier access to a weapon of war,” — Josh Koskoff, attorney for Sandy Hook families
What’s Next
Both suits are pending in the U.S. District Court for Colorado. The cases may prompt the Supreme Court to revisit the balance between historical firearm regulation and modern gun technology, potentially influencing pending challenges to assault-weapon bans in other states.
