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:

    • Jan 6, 2026
    • Democracy Protection/Voting Rights

    United States v. Fontes, Arizona Secretary of State

    The Trump administration sues the state of Arizona for refusing to hand over sensitive voter information to the federal government.
    Read Lawsuit
    • Jan 6, 2026
    • Democracy Protection/Voting Rights

    United States v. Thomas, Connecticut Secretary of State

    The Department of Justice sues Rhode Island for the state's refusal to hand sensitive voter data over to the federal government.
    Read Lawsuit
    • Dec 18, 2025
    • Democracy Protection/Voting Rights

    United States v. District of Columbia Board of Elections

    The Trump administration sues the District of Columbia for refusing to hand sensitive voter information to the federal government.
    Read Lawsuit
    • Dec 18, 2025
    • Democracy Protection/Voting Rights

    United States v. Wisconsin Elections Commission

    The Trump administration sues the state of Wisconsin for refusing to hand sensitive voter information to the federal government.
    Read Lawsuit
    • Dec 18, 2025
    • Democracy Protection/Voting Rights

    United States v. Matthews, Illinois Board of Elections

    The Trump administration sues the state of Illinois for refusing to hand sensitive voter information to the federal government.
    Read Lawsuit
    • Dec 11, 2025
    • Democracy Protection/Voting Rights

    United States v. Aguilar, Nevada Secretary of State

    The Trump administration sues the state of Nevada for its refusal to give sensitive voter information to the federal government.
    Read Lawsuit
    • Dec 11, 2025
    • Democracy Protection/Voting Rights

    United States v. Galvin, Secretary of the Commonwealth of Massachusetts

    The Trump administration sues the state of Massachusetts for refusing to hand sensitive voter information to the federal government.
    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
    • Dec 11, 2025
    • Democracy Protection/Voting Rights

    United States v. Griswold, Colorado Secretary of State

    The Trump administration sues the state of Colorado for refusing to hand over sensitive voter information to the federal government.
    Read Lawsuit
    • Dec 2, 2025
    • Democracy Protection/Voting Rights

    United States v. Rhode Island

    The Department of Justice sues Rhode Island for the state's refusal to hand sensitive voter data over to the federal government.
    Read Lawsuit