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:
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- Apr 3, 2026
- Democracy Protection/Voting Rights
- Executive Power
California v. Trump
AG coalition and Pennsylvania governor Shapiro sue to block President Trump’s mail-in voting executive order.Read Lawsuit -
- Apr 2, 2026
- Consumer Protection
- Executive Power
United States v. Hobbs
The Commodity Futures Trading Commission sues the state of Arizona for attempting to regulate prediction markets, claiming the federal government has sole power to do so.Read Lawsuit -
- Apr 2, 2026
- Environment/Climate
Minnesota v. Wright
AGs of Minnesota and Illinois challenge the Trump Administration's unlawful order that would halt the retirements of costly coal units at the F.B. Culley (Culley) generating station in Newburgh, Indiana, despite the power plant needing significant and expensive maintenance to do so.Read Lawsuit -
- Apr 2, 2026
- Consumer Protection
- Executive Power
United States v. Illinois
The Commodity Futures Trading Commission sues the state of Illinois for attempting to regulate prediction markets, claiming the federal government has sole power to do so.Read Lawsuit -
- Apr 2, 2026
- Consumer Protection
- Executive Power
United States v. Lamont
The Commodity Futures Trading Commission sues the state of Connecticut for attempting to regulate prediction markets, claiming the federal government has sole power to do so.Read Lawsuit -
- Apr 2, 2026
- Environment/Climate
Minnesota v. Wright
AGs of Minnesota and Illinois challenge the Trump Administration's unlawful order that would halt the retirements of costly coal units at the R.M. Schahfer power plant in Wheatfield, Indiana, despite the power plant needing significant and expensive maintenance to do so.Read Lawsuit -
- Mar 31, 2026
- Environment/Climate
- Executive Power
Illinois v. Environmental Protection Agency
AGs and local governments filed a petition for review challenging the Trump Administration’s repeal of the 2024 Mercury and Air Toxics Standards (MATS) Rule that implemented nationwide standards that limit emissions of toxic air pollutants from coal- and oil-fired power plants, including mercury, arsenic, lead and other toxic metals, in addition to acid gases, such as hydrogen chloride and formaldehyde.Read Lawsuit -
- Mar 30, 2026
- LGBTQ Rights
United States v. Minnesota Department of Education
The Department of Justice sues the state of Minnesota for its policy allowing trans female students to play sports with other female students. alleging violations of Title IX.Read Lawsuit -
- Mar 24, 2026
- Military Occupation of US Cities
- Immigration
- Executive Power
Minnesota v. Department of Justice
AG sues the Departments of Justice and Homeland Security for access to evidence collected by the federal government in relation to the homicide of two Minnesotans by federal immigration agents during the "Operation Metro Surge" deployment of militarized immigration enforcement.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