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:

    • Aug 5, 2026
    • Executive Power

    New Mexico v. United States Department of Justice

    New Mexico AG sues Department of Justice for access to unredacted Epstein-related investigative files that the USDOJ has been withholding but which are critical to New Mexico’s ongoing criminal investigation into alleged crimes at Jeffrey Epstein’s Zorro Ranch in Santa Fe County, New Mexico.
    Read Lawsuit
    • Aug 3, 2026
    • Executive Power
    • Consumer Protection

    Oregon v. Trump

    AG coalition and the governors of Kentucky and Pennsylvania sue the Trump administration for instituting another round of unlawful and arbitrary tariffs, these justified by an alleged desire to reduce forced labor as a pretext for this new illegal tariff scheme.
    Read Lawsuit
    • Aug 3, 2026
    • Funding Freeze

    New York v. Administration for Children and Families

    AG coalition and the governors of Pennsylvania and Kentucky sue the Trump administration to block a Systems of Records Notice relating to the administration of the Temporary Assistance for Needy Families program that authorizes the wholesale sharing of recipients’ most sensitive personal information with any federal, state, or private entity it wishes, including the U.S. Department of Homeland Security.
    Read Lawsuit
    • Jul 31, 2026
    • Healthcare

    California v. Kennedy

    AG coalition and the Governor of Pennsylvania file a lawsuit to challenge a federal rule that illegally undermines the Affordable Care Act (ACA) and would make health insurance more expensive.
    Read Lawsuit
    • Jul 23, 2026
    • Executive Power
    • Immigration
    • Military Occupation of US Cities

    United States v. City of Milwaukee

    The Department of Justice sues the City of Milwaukee, Mayor Cavalier Johnson, City Attorney Evan Goyke, and Chief of Police Jeffrey Norman, challenging laws prohibiting federal officers from wearing masks and requiring they wear individual identifiers in Milwaukee.
    Read Lawsuit
    • Jul 23, 2026
    • Immigration
    • Executive Power
    • Education

    United States v. Colorado

    The Department of Justice sues Colorado for state laws that provide in-state tuition and financial aid to undocumented students.
    Read Lawsuit
    • Jul 23, 2026
    • Funding Freeze
    • Executive Power
    • Immigration
    • Democracy Protection/Voting Rights

    Illinois v. FEMA

    AG coalition files lawsuit challenging the Trump Administration for imposing unlawful conditions on billions of dollars in federal grants that help States and local governments prepare for, protect against, respond to, and recover from catastrophic disasters by requiring States to adopt its preferred policies to receive these grants, including complying with new immigration enforcement mandates, accepting new election administration requirements, and allowing funding to be terminated based on vague and subjective criteria.
    Read Lawsuit
    • Jul 21, 2026
    • Environment/Climate
    • Petition for Review

    Massachusetts v. EPA

    AG coalition files a Petition for Review challenging a proposed Environmental Protection Agency rule that would weaken regulations designed to phase out the use of hydrofluorocarbons in commercial equipment.
    Read Lawsuit
    • Jul 16, 2026
    • Immigration
    • Education

    United States v. Maryland

    The Department of Justice sues the state of Maryland challenging its state law and regulation that provide in-state tuition and financial assistance for undocumented students.
    Read Lawsuit
    • Jul 10, 2026
    • Education
    • Funding Freeze

    Washington v. United States Department of Education

    AG coalition sues the Department of Education to halt the effort to terminate grant programs that help schools hire mental health professionals.
    Read Lawsuit