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:

    • Oct 1, 2026
    • Immigration
    • Executive Power
    • Military Occupation of US Cities

    United States v. Maryland

    The Department of Justice sues the state of Maryland for laws prohibiting federal officers from wearing masks and requiring clearly visible identification.
    Read Lawsuit
    • Sep 22, 2026
    • Environment/Climate
    • Executive Power

    California v. Department of the Interior

    California AG sues to block the Trump administration’s effort to cause Invenergy to abandon its offshore wind energy lease off of California’s Central Coast and to invest instead in in out-of-state fossil-fuel or geothermal projects.
    Read Lawsuit
    • Sep 10, 2026
    • Immigration
    • Education

    United States v. District of Columbia

    The Department of Justice sues the District of Columbia for laws that provide in-state tuition and financial aid to undocumented students.
    Read Lawsuit
    • Sep 10, 2026
    • Immigration
    • Education

    United States v. Hawaii

    The Department of Justice sues Hawaii for state laws that provide in-state tuition and financial aid to undocumented students.
    Read Lawsuit
    • Aug 27, 2026
    • Opioid Issue

    New Mexico v. Department of Justice

    AG sues to obtain Drug Enforcement Administration records on fentanyl distribution in the state.
    Read Lawsuit
    • Aug 27, 2026
    • Immigration
    • Education

    United States v. Arizona

    The Department of Justice sues Arizona for state laws that provide in-state tuition and financial aid to undocumented students.
    Read Lawsuit
    • Aug 27, 2026
    • Immigration
    • Education

    United States v. Washington

    The Department of Justice sues Washington for state laws that provide in-state tuition and financial aid to undocumented students.
    Read Lawsuit
    • Aug 27, 2026
    • Education
    • Immigration

    United States v. Oregon

    The Department of Justice sues Oregon for state laws that provide in-state tuition and financial aid to undocumented students.
    Read Lawsuit
    • Aug 27, 2026
    • Immigration
    • Education

    United States v. New Mexico

    The Department of Justice sues New Mexico for state laws that provide in-state tuition and financial aid to undocumented students.
    Read Lawsuit
    • Aug 10, 2026
    • Immigration

    United States v. Vermont

    The Department of Justice sues Vermont for state laws that provide in-state tuition and financial aid to undocumented students.
    Read Lawsuit