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:

State Attorney General Federal Litigation Tracker

Selected Filters:

    • 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
    • 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
    • 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
    • Mar 5, 2026
    • Executive Power
    • Consumer Protection

    Oregon v. Trump

    AG coalition plus the governors of Pennsylvania and Kentucky sue the Trump administration for imposing global tariffs that do not fall within the limited circumstances required by the relevant statute.
    Read Lawsuit
    • Feb 25, 2026
    • Funding Freeze
    • Executive Power

    Colorado v. United States

    AG coalition sues the U.S. Department of Homeland Security and the Federal Emergency Management Agency for illegally and abruptly ending millions in grants to states to prevent targeted violence and terrorist attacks
    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
    • 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