Ongoing court cases and litigation
State attorneys general play a vital role in bringing litigation that defends the rule of law, protects the rights of residents, and upholds state and federal statutes.
This page tracks ongoing lawsuits and legal actions led or joined by state AGs against the Trump administration — on topics ranging from civil rights and consumer protection to environmental justice and challenges to federal overreach. Here you’ll find case summaries, court filings, and the latest developments in high-impact litigation that reflect the evolving responsibilities of state attorneys general in today’s legal and political environment.
Click here to see a full view of the litigation led by Progressive State AGs:
All Filters
-
- Jun 10, 2026
- Immigration
Santa Clara v. United States Customs and Immigration Enforcement
California AG and Santa Clara County sue to block the illegal development of an Immigration and Customs Enforcement facility in unincorporated Santa Clara County near Gilroy, California.Read Lawsuit -
- Apr 24, 2026
- Immigration
Arizona v. Mullin
Arizona AG sues the Department of Homeland Security and Immigration and Customs Enforcement to stop them from converting a vacant warehouse into an immigrant detention facility in the city of Surprise, AZ.Read Lawsuit -
- Mar 24, 2026
- Immigration
Michigan v. Department of Homeland Security
Michigan AG and the City of Romulus sue the U.S. Department of Homeland Security and U.S. Immigration and Customs Enforcement challenging its plan to convert a Romulus warehouse into a mass immigration detention facility.Read Lawsuit -
- Mar 20, 2026
- Immigration
New Jersey v. Immigration and Customs Enforcement
New Jersey and the Township of Roxbury sue U.S. Immigration and Customs Enforcement and the U.S. Department of Homeland Security to halt their illegal plan to convert a vacant warehouse into a large-scale immigration detention facility.Read Lawsuit -
- Mar 10, 2026
- Immigration
Maryland v. Lyons
Maryland AG Brown sued Immigration and Customs Enforcement and the Department of Homeland Security, seeking their compliance with the AG’s administrative subpoena for records related to reported dangerous, inhumane, and unlawful conditions in ICE “hold rooms” at the George H. Fallon Federal Building in the city of Baltimore.Read Lawsuit -
- Feb 23, 2026
- Immigration
- Executive Power
- Military Occupation of US Cities
Maryland v. Noem
AG Brown sues the Trump administration to stop the Department of Homeland Security and ICE from converting a warehouse into a massive immigrant detention facility without proper oversight, reviews, or permits.Read Lawsuit -
- Jan 24, 2026
- Military Occupation of US Cities
- Executive Power
Minnesota Bureau of Criminal Apprehension v. Noem
Minnesota AG and the Hennepin County Attorney sue the Department of Homeland Security to require federal authorities to preserve evidence in the investigation of the killing of legal observer Alex Pretti during anti-ICE protests.Read Lawsuit -
- Jan 12, 2026
- Immigration
- Executive Power
- Military Occupation of US Cities
Minnesota v. Noem
Minnesota AG sues the Trump administration over the surge of immigration enforcement personnel conducting militarized raids and illegal stops and arrests in the Twin Cities area.Read Lawsuit -
- Jan 12, 2026
- Immigration
- Military Occupation of US Cities
- Executive Power
Illinois v. Department of Homeland Security
Illinois AG sues the Trump administration for deploying immigration enforcement agents to engage in unconstitutional raids and indiscriminate violence against residents in Chicago and across Illinois.Read Lawsuit -
- Feb 12, 2025
- Immigration
United States v. New York
Trump administration sues New York over the state's "Green Light Law" that bars the sharing of DMV information with federal immigration authorities.Read Lawsuit