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:

    • 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
    • Jul 9, 2026
    • Immigration
    • Executive Power

    United States v. Maryland

    The Department of Justice sues Maryland and Maryland Attorney General Anthony Brown alleging that the State’s sanctuary policies interfere with the federal government’s enforcement of its immigration laws.
    Read Lawsuit
    • Jul 7, 2026
    • Funding Freeze
    • Executive Power

    Washington v. Department of Housing and Urban Development

    AG coalition and the governors of Pennsylvania and Kentucky sue the Trump administration to block a cap on funding for permanent housing and set other unlawful conditions on Continuum of Care funds.
    Read Lawsuit
    • Jul 1, 2026
    • Gun Safety

    United States v. Virginia

    The Department of Justice sues the state of Virginia to halt a newly enacted law that bans the purchase and sale of semi-automatic rifles.
    Read Lawsuit
    • Jul 1, 2026
    • Gun Safety

    United States v. California

    The Department of Justice sues California to halt the state’s newly enacted "Glock Ban" and seeks to prevent enforcement of the state’s “Handgun Roster” — a list limiting legal firearms that individuals may purchase
    Read Lawsuit
    • Jun 29, 2026
    • Immigration

    United States v. Rhode Island

    The Department of Justice’s Civil Division sues Rhode Island challenging a state law providing in-state tuition and financial assistance to undocumented state residents.
    Read Lawsuit
    • Jun 29, 2026
    • Immigration

    United States v. Massachusetts

    The Department of Justice’s Civil Division sues Massachusetts challenging a state law providing in-state tuition and financial assistance to undocumented state residents.
    Read Lawsuit
    • Jun 29, 2026
    • Healthcare

    Massachusetts v. Oz

    AG coalition and the governors of Pennsylvania and Kentucky sue the Trump Administration's over its unlawful implementation of new Medicaid work requirements included in the One Big Beautiful Bill Act, challenging provisions of an interim final rule published by the U.S. Department of Health and Human Services and Centers for Medicare & Medicaid Services.
    Read Lawsuit
    • Jun 26, 2026
    • Funding Freeze
    • Executive Power

    United States v. Michigan

    The Department of Justice sues the state of Michigan seeking an injunction requiring their state SNAP agencies to turn over their last five years of SNAP applicant data.
    Read Lawsuit
    • Jun 26, 2026
    • Funding Freeze
    • Executive Power

    United States v. Minnesota

    The Department of Justice sues Minnesota seeking an injunction requiring the state SNAP agency turn over their last five years of SNAP applicant data.
    Read Lawsuit