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 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
    • 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 10, 2026
    • DEI/Civil Rights
    • Funding Freeze

    Maryland v. Hegseth

    AG coalition sued the Trump administration over the addition of new terms to federal contracts that – in the name of purging “diversity, equity, and inclusion” from federal contracting – impose unclear and confusing requirements on contractors that may depart from antidiscrimination policies that contractors have followed for decades, and threaten severe penalties on federal contractors without adequate notice of what is prohibited.
    Read Lawsuit
    • May 31, 2026
    • Environment/Climate
    • Funding Freeze
    • Executive Power

    Renewable Northwest v. Hegseth

    AG coalition files Motion to Intervene in a lawsuit challenging the Department of Defense's unlawful freezing of routine reviews of land-based wind energy projects around the country.
    Read Lawsuit
    • May 19, 2026
    • Education

    Maryland v. Department of Education

    AG coalition sues the U.S. Department of Education over a new rule that unlawfully limits access to federal student loans by narrowing the federal definition of “professional degree” and imposes restrictions Congress did not authorize, unlawfully excluding many degree programs that qualify under the standards established by federal law.
    Read Lawsuit
    • 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
    • Apr 2, 2026
    • Petition for Review

    Minnesota v. Department of Energy

    AGs of Minnesota and Illinois challenge the Trump Administration's unlawful order that would halt the retirements of costly coal units at the F.B. Culley (Culley) generating station in Newburgh, Indiana, despite the power plant needing significant and expensive maintenance to do so.
    Read Lawsuit
    • Apr 2, 2026
    • Consumer Protection
    • Executive Power

    United States v. Illinois

    The Commodity Futures Trading Commission sues the state of Illinois for attempting to regulate prediction markets, claiming the federal government has sole power to do so.
    Read Lawsuit
    • Apr 2, 2026
    • Environment/Climate

    Minnesota v. Wright

    AGs of Minnesota and Illinois challenge the Trump Administration's unlawful order that would halt the retirements of costly coal units at the R.M. Schahfer power plant in Wheatfield, Indiana, despite the power plant needing significant and expensive maintenance to do so.
    Read Lawsuit