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
-
- 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 -
- Mar 2, 2026
- Funding Freeze
- Healthcare
Minnesota v. Oz
AG Ellison and the Minnesota Department of Human Services (DHS) filed a federal lawsuit against the Centers for Medicare and Medicaid Services and the U.S. Department of Health and Human Services for illegally attempting to withhold $243 million in Medicaid payments from the state of Minnesota.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 -
- Dec 11, 2025
- Democracy Protection/Voting Rights
United States v Nago, Hawaii Secretary of State
The Trump administration sues the state of Hawaii for refusing to hand sensitive voter information to the federal government.Read Lawsuit -
- Nov 17, 2025
- Military Occupation of US Cities
- Immigration
United States v. California
The Trump administration sues California over its "mask ban", forbidding any law enforcement authorities from wearing masks or engaging in law enforcement activities without identifying themselves.Read Lawsuit -
- Oct 16, 2025
- Environment/Climate
- Executive Power
- Funding Freeze
Arizona v. EPA
AGs sue the Environmental Protection Agency over the unilateral and illegal termination of the "Solar for All" program designed to bring low-cost solar energy to over 900,000 households in low-income and disadvantaged communities.Read Lawsuit -
- Sep 4, 2025
- Executive Power
- Military Occupation of US Cities
District of Columbia v. Trump
D.C. AG sues to stop the illegal deployment of the National Guard, arguing they are engaged in law enforcement activity in clear violation of the Posse Comitatus acts and the constitution.Read Lawsuit -
- Jul 29, 2025
- Healthcare
- Reproductive Rights
California v. Department of Health and Human Services
AGs sue to block the unconstitutional "Defund Provision" of the 2025 reconciliation law that forbids states from using Medicaid dollars to pay for healthcare services provided at Planned Parenthood health centers.Read Lawsuit -
- Jul 17, 2025
- Healthcare
California v. Centers for Medicare and Medicaid Services
AGs sue to block new Trump administration rules governing the Affordable Care Act that could cost up to 1.8 million people their health insurance.Read Lawsuit