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Litigation

Explore NILC’s litigation library to learn more about our current and past legal work.

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    Lucy v. Skrmetti

    Lucy v. Skrmetti

    This lawsuit challenges the constitutionality of H.B. 1704, a Tennessee bill that unlawfully usurps federal control over the U.S. immigration system.

    Last update: Jun 8, 2026

    Mullin v. Doe

    Mullin v. Doe

    This Amicus Brief uplifts the stories of directly impacted TPS holders who are at risk of losing everything if the Supreme Court allows the Trump administration to terminate the Temporary Protected Status...

    Last update: Apr 13, 2026

    Perez-Funez, et al. v. U.S. Department of Homeland Security, et al.

    Perez-Funez, et al. v. U.S. Department of Homeland Security, et al.

    This lawsuit established the basic procedural safeguards that all unaccompanied children must receive to prevent their unlawful removal from the United States.

    Last update: Apr 21, 2026

    Cacho v. Gusman

    Cacho v. Gusman

    This lawsuit challenges the months-long confinement of Mario Cacho and Antonio Ocampo in the Orleans Parish jail.

    Last update: Apr 2, 2026

    CLINIC v. Rubio

    CLINIC v. Rubio

    This lawsuit challenges the Trump administration’s sweeping suspension of immigrant visa processing for people from 75 countries.

    Last update: Apr 22, 2026

    United States of America v. State of California

    United States of America v. State of California

    This amicus brief was filed in support of California’s laws that ban law enforcement from wearing masks and require that officers identify themselves.

    Last update: Jan 13, 2026

    Harris et al. v. Lee et al.

    Harris et al. v. Lee et al.

    This lawsuit challenges Governor Bill Lee’s unlawful activation and deployment of the Tennessee National Guard as a police force at President Trump’s request.

    Last update: Apr 29, 2026

    LGML v. Noem

    LGML v. Noem

    This lawsuit seeks to stop the Trump administration from unlawfully expelling hundreds of unaccompanied Guatemalan children from the United States.

    Last update: Feb 25, 2026

    Davids v. Adams

    Davids v. Adams

    This lawsuit seeks to stop the enforcement of Idaho's HB 135, a bill that will force people to prove that they are “lawfully present” to access life-saving health care, including HIV medication and...

    Last update: Sep 10, 2025

    USA v. Students (Formally United States of America v. Texas)

    USA v. Students (Formally United States of America v. Texas)

    This case seeks to overturn the injunction of the Texas Dream Act, a landmark law which guarantees all eligible Texas high school graduates—regardless of their immigration status—in-state tuition at Texas state higher education...

    Last update: Oct 2, 2025

    CHIRLA v. U.S. DEPARTMENT OF HOMELAND SECURITY

    CHIRLA v. U.S. DEPARTMENT OF HOMELAND SECURITY

    This lawsuit challenges a rule by the Trump administration, which requires millions of people to register with the federal government and carry proof of their registration with them at all times, or risk federal criminal...

    Last update: Apr 10, 2025

    State of Texas v. U.S. Department of Homeland Security

    State of Texas v. U.S. Department of Homeland Security

    Texas and other states sued the federal government to stop the Keeping Families Together Parole in Place policy, which allows eligible noncitizens to apply for work authorization and adjustment of status in the U.S. without having to leave the...

    Last update: Apr 6, 2026

    Kansas v. United States

    Kansas v. United States

    NILC is defending the Biden administration’s regulation allowing DACA recipients to access coverage through the Affordable Care Act against a lawsuit brought by Kansas and 18 other...

    Last update: Jan 7, 2025

    Padres Unidos de Tulsa v. Drummond

    Padres Unidos de Tulsa v. Drummond

    Case challenging the constitutionality of Oklahoma’s HB 4156, a law which seeks to usurp federal authority to regulate immigration.

    Last update: Oct 30, 2024

    LUPE v. TEXAS

    LUPE v. TEXAS

    Case challenging the constitutionality of Texas’ S.B. 4, a law which seeks to usurp federal authority to regulate immigration.

    Last update: Aug 29, 2024