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 8, 2026
    • Funding Freeze
    • Healthcare
    • Executive Power

    New York v. Administration for Children and Families

    AGs sue the Trump administration for unlawfully freezing $10 billion in federal funds designated for food, housing, and child care as punishment for the states’ political leadership.
    Read Lawsuit
    • Jul 29, 2025
    • Healthcare
    • Reproductive Rights

    California v. Department of Health and Human Services

    AGs sue to block the unconstitutional "Defund Provision" of the 2025 reconciliation law that forbids states from using Medicaid dollars to pay for healthcare services provided at Planned Parenthood health centers.
    Read Lawsuit
    • Jul 17, 2025
    • Healthcare

    California v. Centers for Medicare and Medicaid Services

    AGs sue to block new Trump administration rules governing the Affordable Care Act that could cost up to 1.8 million people their health insurance.
    Read Lawsuit
    • Jul 1, 2025
    • Healthcare
    • Executive Power
    • Funding Freeze
    • Privacy/Technology

    California v. Health and Human Services

    AGs sue the Department of Health and Human Services because it provided unfettered access to individual, confidential personal health data to the Department of Homeland Security for immigration enforcement purposes.
    Read Lawsuit
    • May 5, 2025
    • Healthcare
    • Executive Power

    New York v. Kennedy, Department of Health and Human Services

    AGs sue to reverse Trump administration's mass termination of 10,000 employees and shuttering of dozens of agencies.
    Read Lawsuit
    • Apr 4, 2025
    • Healthcare
    • Executive Power

    Massachusetts v. Kennedy, Department of Health and Human Services

    AGs sue to reinstate the National Institutes of Health grants and restore their grant application process.
    Read Lawsuit
    • Apr 1, 2025
    • Funding Freeze
    • Executive Power
    • Healthcare

    Colorado v. Department of Health and Human Services

    AGs sue to block the Department of Health and Human Services' abrupt cancellation of $11 billion in critical public health funding.
    Read Lawsuit
    • Aug 8, 2024
    • Immigration
    • Healthcare

    Kansas v. United States

    AGs move to intervene in case that began when Kansas sued the Biden administration for allowing DACA recipients to buy insurance on the ACA exchange. With the change in administration, AGs seek to intervene to defend the rule.
    Read Lawsuit