Supreme Court Term 2025-2026
We’re breaking down the cases we've asked the court to consider this term.
Latest Case Updates
Ongoing
Updated February 25, 2026
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Updated February 18, 2026
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Updated January 26, 2026
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Updated January 16, 2026
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Missouri
Feb 2026
Voting Rights
Missouri v. U.S. Department of Commerce
A coalition of civil rights and immigrant-rights organizations has moved to intervene as defendants in a lawsuit that threatens to dismantle the Constitution’s long-standing requirement that the decennial census count all people living in the United States. Missouri asks the court to exclude undocumented immigrants and people living in the country on temporary visas from the census count used to determine congressional representation—an unprecedented move that would upend more than two centuries of constitutional practice.
Mississippi
Dec 2025
Voting Rights
White v. Mississippi State Board of Elections
District lines used to elect Mississippi’s Supreme Court have gone unchanged for more than 35 years. We’re suing because the current lines crack the Mississippi Delta and dilute the voting strength of Black Mississippians in state Supreme Court elections, in violation of the Voting Rights Act.
Court Case
Dec 2025
National Security
Human Rights
FOIA Case Seeking the Trump Administration’s Legal Justification for Deadly Boat Strikes
The Department of Justice’s Office of Legal Counsel (“OLC”) authored a legal opinion that reportedly claims to justify the Trump administration’s illegal lethal strikes on civilians in boats in the Caribbean Sea and eastern Pacific Ocean. Media reports indicate that, in addition to claiming that the strikes are lawful acts in an alleged “armed conflict” with unspecified drug cartels, the OLC opinion also purports to immunize personnel who authorized or took part in the strikes from future criminal prosecution. Because the public deserves to know how our government is justifying these illegal strikes, and why they think the people who carried them out should not be held accountable, the ACLU is seeking immediate release of the OLC legal opinion and related documents pursuant to the Freedom of Information Act.
U.S. Supreme Court
Dec 2025
Immigrants' Rights
Barbara v. Donald J. Trump
President Trump is attempting to undermine the promise of birthright citizenship to children born on U.S. soil. But the ACLU and partners are fighting to protect the rights of citizens that are plainly stated in the Constitution, federal statute, and reaffirmed by the Supreme Court for more than a century. We’re arguing against the Trump administration in the Supreme Court and are confident we will win.
U.S. Supreme Court
Nov 2025
Voting Rights
Racial Justice
Allen v. Milligan
Whether Alabama’s congressional districts violate Section 2 of the Voting Rights Act because they discriminate against Black voters. We succeeded in winning a new map for 2024 elections which, for the first time, has two congressional district that provide Black voters a fair opportunity to elect candidates of their choosing despite multiple attempts by Alabama to stop us at the Supreme Court. Despite this win, Alabama is still defending its discriminatory map, and a trial was held in February 2025 to determine the map for the rest of the decade.
In May 2025, a federal court ruled that Alabama's 2023 congressional map both violates Section 2 of the Voting Rights Act and was enacted by the Alabama Legislature with racially discriminatory intent.
Washington, D.C.
Oct 2025
Voting Rights
League of Women Voters Education Fund v. Trump
On March 25, 2025, in a sweeping and unprecedented Executive Order, President Trump attempted to usurp the power to regulate federal elections from Congress and the States. Among other things, the Executive Order directs the Election Assistance Commission—an agency that Congress specifically established to be bipartisan and independent—to require voters to show a passport or other citizenship documentation in order to register to vote in federal elections. If implemented, the Executive Order would threaten the ability of millions of eligible Americans to register and vote and upend the administration of federal elections.
On behalf of leading voter registration organizations and advocacy organizations, the ACLU and co-counsel filed a lawsuit to block the Executive Order as an unconstitutional power grab.
U.S. Supreme Court
Oct 2025
Voting Rights
State Board of Election Commissioners v. Mississippi State Conference of the NAACP
Mississippi has a growing Black population, which is already the largest Black population percentage of any state in the country. Yet. Black Mississippians continue to be significantly under-represented in the state legislature, as Mississippi’s latest districting maps fail to reflect the reality of the state’s changing demographics. During the 2022 redistricting process, the Mississippi legislature refused to create any new districts where Black voters have a chance to elect their preferred representative. The current district lines therefore dilute the voting power of Black Mississippians and continue to deprive them of political representation that is responsive to their needs and concerns, including severe disparities in education and healthcare.
U.S. Supreme Court
Oct 2025
Voting Rights
Louisiana v. Callais (Callais v. Landry)
Whether the congressional map Louisiana adopted to cure a Voting Rights Act violation in Robinson v. Ardoin is itself unlawful as a gerrymander.
Missouri
Sep 2025
Voting Rights
Wise v. Missouri
In unprecedented fashion, the State of Missouri has redrawn the district lines used for electing members of Congress for a second time this decade. These new district lines are gerrymandered and will harm political representation for all Missourians, particularly Black residents in Kansas City, who have been divided along racial lines.
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1,678 Court Cases
Missouri
Oct 2020
Women's Rights
KC Tenants v. David M. Byrn
On September 30, 2020, WRP and ACLU-MO filed a complaint for injunctive and declaratory relief in the Western District of Missouri on behalf of KC Tenants, a local grassroots organization that seeks to advance fair housing access to renters. The lawsuit challenges the Jackson County Circuit Court's administrative order that purports to implement the Centers for Disease Control and Prevention’s (CDC) nationwide eviction moratorium, but instead permits eviction cases to move forward in violation of it, putting hundreds of Missouri tenants at risk for eviction in violation of federal protections.
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Missouri
Oct 2020
Women's Rights
KC Tenants v. David M. Byrn
On September 30, 2020, WRP and ACLU-MO filed a complaint for injunctive and declaratory relief in the Western District of Missouri on behalf of KC Tenants, a local grassroots organization that seeks to advance fair housing access to renters. The lawsuit challenges the Jackson County Circuit Court's administrative order that purports to implement the Centers for Disease Control and Prevention’s (CDC) nationwide eviction moratorium, but instead permits eviction cases to move forward in violation of it, putting hundreds of Missouri tenants at risk for eviction in violation of federal protections.
Court Case
Oct 2020
National Security
ACLU v. DOD - FOIA Case Seeking Trump Administration's Secret Rules for Lethal Strikes Abroad
In October 2017, the Trump administration secretly adopted rules governing the use of lethal force in drone strikes and other killings abroad. These rules, known as the “Principles, Standards, and Procedures,” reportedly loosen Obama-era safeguards against civilian casualties outside “areas of active hostilities.” On October 30, 2017, the ACLU filed a request under the Freedom of Information Act seeking public disclosure of these new rules. When the government failed to release them, we filed a lawsuit on December 21, 2017, to force their disclosure. The government responded by refusing even to acknowledge that the new rules exist. We challenged this unjustifiable secrecy—and on September 29, 2020, a federal court ordered that the government cannot keep the existence of its new killing rules a secret. Our fight to expose the contents of the rules goes on.
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Court Case
Oct 2020
National Security
ACLU v. DOD - FOIA Case Seeking Trump Administration's Secret Rules for Lethal Strikes Abroad
In October 2017, the Trump administration secretly adopted rules governing the use of lethal force in drone strikes and other killings abroad. These rules, known as the “Principles, Standards, and Procedures,” reportedly loosen Obama-era safeguards against civilian casualties outside “areas of active hostilities.” On October 30, 2017, the ACLU filed a request under the Freedom of Information Act seeking public disclosure of these new rules. When the government failed to release them, we filed a lawsuit on December 21, 2017, to force their disclosure. The government responded by refusing even to acknowledge that the new rules exist. We challenged this unjustifiable secrecy—and on September 29, 2020, a federal court ordered that the government cannot keep the existence of its new killing rules a secret. Our fight to expose the contents of the rules goes on.
Court Case
Oct 2020
Women's Rights
Preventing Mass Evictions: Amicus Brief in Support of Massachusetts Eviction Moratorium
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Court Case
Oct 2020
Women's Rights
Preventing Mass Evictions: Amicus Brief in Support of Massachusetts Eviction Moratorium
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Tennessee
Sep 2020
Religious Liberty
Butler v. Smith County
The American Civil Liberties Union of Tennessee and the American Civil Liberties Union filed a federal lawsuit challenging widespread promotion of religion by officials in the Smith County School System. Brought on behalf of two families, the lawsuit alleges that school officials regularly incorporate prayer into school events and proselytize students in violation of the Establishment Clause of the First Amendment to the U.S. Constitution
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Tennessee
Sep 2020
Religious Liberty
Butler v. Smith County
The American Civil Liberties Union of Tennessee and the American Civil Liberties Union filed a federal lawsuit challenging widespread promotion of religion by officials in the Smith County School System. Brought on behalf of two families, the lawsuit alleges that school officials regularly incorporate prayer into school events and proselytize students in violation of the Establishment Clause of the First Amendment to the U.S. Constitution