All Cases

253 Court Cases
Court Case
Oct 23, 2025
In the Courts, ACLU of Colorado logo on a blue background with a woman holding the scales of justice.
  • Immigrant Justice

United States of America v. State of Colorado, et al. (Amicus)

In a lawsuit brought against Colorado and Denver by the federal government, the ACLU of Colorado filed an amicus brief defending state and local laws that limit the diversion of their resources for the purpose of federal civil immigration enforcement. The brief argues that these laws are good policy, as they protect public safety and the functioning of state government, keep state actors within constitutional bounds, and promote the overall well-being of our communities and economy.
Court Case
Sep 30, 2025
In the Courts, ACLU of Colorado logo on a blue background with a woman holding the scales of justice.
  • Freedom of Expression & Religion|
  • +1 Issue

St. Mary Catholic Parish v. Roy (Amicus)

We filed an amicus brief arguing that there is no Free Exercise Clause violation when a governmental body conditions a public benefit on a religion-neutral and generally applicable requirement.
Court Case
Sep 29, 2025
In the Courts, ACLU of Colorado logo on a blue background with a woman holding the scales of justice.
  • Criminal Legal Reform|
  • +1 Issue

Colorado v. Gregg (Amicus)

The ACLU of Colorado filed an amicus brief with Spero Justice and Office of the Alternate Defense Counsel arguing that Colorado’s habitual sentencing scheme is unconstitutional.
Court Case
Sep 15, 2025
In the Courts, ACLU of Colorado logo on a blue background with a woman holding the scales of justice.
  • Government Transparency|
  • +1 Issue

O’Connell v. Woodland Park School District (Amicus)

We participated as amicus in a case requesting the Colorado Supreme Court to provide clear guidance related to the judicially created “cure” doctrine that permits a state or local public body to ‘cure’ a prior violation of the Colorado Open Meetings Law by holding a subsequent complying meeting.
Court Case
Sep 15, 2025
In the Courts, ACLU of Colorado logo on a blue background with a woman holding the scales of justice.
  • Freedom of Expression & Religion|
  • +1 Issue

Darren Patterson Christian Academy v. Roy, et al. (Amicus)

The ACLU of Colorado joined civil rights groups and religious organizations to file an Amicus Brief arguing that there is no Free Exercise Clause violation when a governmental body conditions a public benefit on a religion-neutral and generally applicable requirement.
Court Case
Aug 29, 2025
In the Courts, ACLU of Colorado logo on a blue background with a woman holding the scales of justice.
  • Freedom of Expression & Religion|
  • +2 Issues

SeeWalker v. Vail

Danielle SeeWalker was selected as Vail’s summer 2024 Artist in Residence. But after she expressed her views on the humanitarian crisis in Gaza, Vail cancelled her residency. We sued Vail on behalf of Ms. SeeWalker for the town's unconstitutional viewpoint-based discrimination and retaliation.
Court Case
Aug 28, 2025
In the Courts, ACLU of Colorado logo on a blue background with a woman holding the scales of justice.
  • Immigrant Justice|
  • +3 Issues

ACLU, et al. v. U.S. Immigration and Customs Enforcement

The American Civil Liberties Union and ACLU of Colorado filed a lawsuit against ICE to obtain records regarding the agency’s potential plans to expand immigration detention across Colorado and Wyoming.
Court Case
Jul 30, 2025
In the Courts, ACLU of Colorado logo on a blue background with a woman holding the scales of justice.
  • Government Transparency

City of Boulder v. Yellow Scene Magazine (Amicus)

The ACLU of Colorado filed an amicus brief with the Colorado Freedom of Information Coalition urging the Colorado Court of Appeals to uphold a ruling that fees for body-worn camera footage are not authorized by Colorado’s Enhance Law Enforcement Integrity Act passed in 2020.
Court Case
Jun 20, 2025
In the Courts, ACLU of Colorado logo on a blue background with a woman holding the scales of justice.
  • Freedom of Expression & Religion

National Public Radio, Inc., et al., v. Donald Trump, et al. (Amicus)

The ACLU of Colorado filed an amicus brief urging the U.S. District Court for the District of Columbia to block the enforcement of President Trump’s recent executive order targeting National Public Radio (NPR) and threatening local public radio stations.