Colorado
All Cases
10 Colorado Cases
Colorado
Dec 2025
Voting Rights
United States v. Griswold
Representing Common Cause and two Colorado voters, the ACLU Voting Rights Project and ACLU of Colorado have filed a motion to intervene in a federal lawsuit over the federal government’s demand that Colorado turn over its entire voter registration rolls, including voters’ sensitive personal data such as drivers’ license numbers and partial social security numbers.
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Colorado
Dec 2025
Voting Rights
United States v. Griswold
Representing Common Cause and two Colorado voters, the ACLU Voting Rights Project and ACLU of Colorado have filed a motion to intervene in a federal lawsuit over the federal government’s demand that Colorado turn over its entire voter registration rolls, including voters’ sensitive personal data such as drivers’ license numbers and partial social security numbers.
Colorado
May 2025
Immigrants' Rights
DBU v. Trump
Emergency lawsuit filed in federal court to again halt removals under the Alien Enemies Act for people within that court’s judicial district.
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Colorado
May 2025
Immigrants' Rights
DBU v. Trump
Emergency lawsuit filed in federal court to again halt removals under the Alien Enemies Act for people within that court’s judicial district.
Colorado
Apr 2025
Immigrants' Rights
American Civil Liberties Union Foundation v. U.S. Immigration and Customs Enforcement
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Colorado
Apr 2025
Immigrants' Rights
American Civil Liberties Union Foundation v. U.S. Immigration and Customs Enforcement
Colorado
Mar 2025
Voting Rights
Citizens Project v. City of Colorado Springs
Colorado Springs’s unusually-timed elections suppress voter turnout—disproportionately, among the City’s Black and Hispanic population. This federal court lawsuit challenges the City’s election timing for violating our clients’ right to vote free from denial of abridgment on account of race under the Voting Rights Act of 1965.
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Colorado
Mar 2025
Voting Rights
Citizens Project v. City of Colorado Springs
Colorado Springs’s unusually-timed elections suppress voter turnout—disproportionately, among the City’s Black and Hispanic population. This federal court lawsuit challenges the City’s election timing for violating our clients’ right to vote free from denial of abridgment on account of race under the Voting Rights Act of 1965.
Colorado Supreme Court
Feb 2025
Voting Rights
League of Women Voters of Greeley, Weld County v. Board of County Commissioners of Weld County (Amicus)
When drawing its new maps, the Weld County Board of County Commissioners violated Colorado law imposing specific requirements meant to guarantee that county commission districts are drawn transparently and fairly, such that voters are empowered to elect responsive and accountable commissioners. A Colorado district court granted summary judgment to voter plaintiffs who challenged the maps, but the Board appealed the decision, arguing in part that voters lacked standing and a right of action to challenge the unlawful districts.
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Colorado Supreme Court
Feb 2025
Voting Rights
League of Women Voters of Greeley, Weld County v. Board of County Commissioners of Weld County (Amicus)
When drawing its new maps, the Weld County Board of County Commissioners violated Colorado law imposing specific requirements meant to guarantee that county commission districts are drawn transparently and fairly, such that voters are empowered to elect responsive and accountable commissioners. A Colorado district court granted summary judgment to voter plaintiffs who challenged the maps, but the Board appealed the decision, arguing in part that voters lacked standing and a right of action to challenge the unlawful districts.