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 23, 2026
    • Executive Power
    • Immigration
    • Military Occupation of US Cities

    United States v. City of Milwaukee

    The Department of Justice sues the City of Milwaukee, Mayor Cavalier Johnson, City Attorney Evan Goyke, and Chief of Police Jeffrey Norman, challenging laws prohibiting federal officers from wearing masks and requiring they wear individual identifiers in Milwaukee.
    Read Lawsuit
    • Jul 23, 2026
    • Immigration
    • Executive Power
    • Education

    United States v. Colorado

    The Department of Justice sues Colorado for state laws that provide in-state tuition and financial aid to undocumented students.
    Read Lawsuit
    • Jul 23, 2026
    • Funding Freeze
    • Executive Power
    • Immigration
    • Democracy Protection/Voting Rights

    Illinois v. FEMA

    AG coalition files lawsuit challenging the Trump Administration for imposing unlawful conditions on billions of dollars in federal grants that help States and local governments prepare for, protect against, respond to, and recover from catastrophic disasters by requiring States to adopt its preferred policies to receive these grants, including complying with new immigration enforcement mandates, accepting new election administration requirements, and allowing funding to be terminated based on vague and subjective criteria.
    Read Lawsuit
    • Jul 16, 2026
    • Immigration
    • Education

    United States v. Maryland

    The Department of Justice sues the state of Maryland challenging its state law and regulation that provide in-state tuition and financial assistance for undocumented students.
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    • 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
    • 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 23, 2026
    • Executive Power
    • Military Occupation of US Cities
    • Immigration

    New York v. Department of Justice

    AG sues the U.S. Department of Justice in proactive defense of a slate of recently passed state laws that prohibit local, state, and federal law enforcement officers from concealing their identity with masks, requiring all officers to display clear identification, prohibiting local governments and law enforcement agencies from entering into agreements to operate as immigration officers or to detain people solely for federal civil immigration violations, and prohibiting the use of public subsidies for civil immigration detention facilities.
    Read Lawsuit
    • Jun 22, 2026
    • Executive Power
    • Military Occupation of US Cities
    • Immigration

    United States v. Russo

    The US Department of Justice sues the state of New York over recently passed state laws that prohibit local, state, and federal law enforcement officers from concealing their identity with masks while interacting with the public, requiring all officers to display clear identification, ensuring local law enforcement can remain focused on local community safety issues by prohibiting local governments and law enforcement agencies from entering into agreements to operate as immigration officers or to detain people solely for federal civil immigration violations, and prohibiting the use of public subsidies for civil immigration detention facilities.
    Read Lawsuit
    • Jun 11, 2026
    • Immigration
    • Executive Power
    • Military Occupation of US Cities

    United States v. Virginia

    The Department of Justice sues the state of Virginia for a state law prohibiting federal law enforcement from wearing facial coverings and working without visible identification.
    Read Lawsuit