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:

    • Nov 20, 2025
    • Executive Power
    • Immigration

    United States v. Newsom

    The Trump administration sues California over a state law allowing undocumented students to pay in-state tuition for college.
    Read Lawsuit
    • Nov 17, 2025
    • Military Occupation of US Cities
    • Immigration

    United States v. Newsom

    The Trump administration sues California over its "mask ban", forbidding any law enforcement authorities from wearing masks or engaging in law enforcement activities without identifying themselves.
    Read Lawsuit
    • Nov 6, 2025
    • Executive Power

    Maryland v. Patel

    Maryland AG filed suit over the federal government's sabotage of the years-long plan to build a new FBI headquarters in Maryland and illegally divert congressionally-appropriated funds from that project..
    Read Lawsuit
    • Nov 5, 2025
    • Democracy Protection/Voting Rights

    Tangipa v. Newsom

    California is sued by the Department of Justice and the California Republican Party over the successful constitutional amendment vote to allow mid-decade redistricting in the state.
    Read Lawsuit
    • Nov 4, 2025
    • Executive Power
    • Funding Freeze
    • Immigration

    Michigan v. Noem

    AGs sue the Department of Homeland Security and FEMA for imposing unlawful conditions on grants and imposing new barriers to states accessing emergency management dollars, disaster relief, and funds for police and emergency response personnel.
    Read Lawsuit
    • Nov 3, 2025
    • Education

    Massachusetts v. Department of Education

    AGs sue the Department of Education to block a new rule that strips Public Service Loan Forgiveness eligibility from people whose work is disfavored by the Trump administration, including supporting immigrant rights, DEI, and gender-affirming care.
    Read Lawsuit
    • Oct 29, 2025
    • Executive Power

    Colorado v. Trump

    Colorado AG sues the Trump administration for moving the U.S. Space Command out of Colorado Springs as a punishment to the state for allowing eligible voters to vote by mail.
    Read Lawsuit
    • Oct 28, 2025
    • Executive Power
    • Funding Freeze

    Massachusetts v. United States Department of Agriculture

    AGs sue the Department of Agriculture for its unlawful refusal to fund SNAP benefits during the government shutdown.
    Read Lawsuit
    • Oct 16, 2025
    • Environment/Climate
    • Executive Power
    • Funding Freeze

    Arizona v. EPA

    AGs sue the Environmental Protection Agency over the unilateral and illegal termination of the "Solar for All" program designed to bring low-cost solar energy to over 900,000 households in low-income and disadvantaged communities.
    Read Lawsuit
    • Oct 16, 2025
    • Environment/Climate
    • Funding Freeze
    • Executive Power

    Maryland Clean Energy Center v. United States

    AGs sue the Trump administration in the Court of Federal claims for the illegal termination of competitive grants under the "Solar for All" zero-emissions technologies program.
    Read Lawsuit