Supreme Court Term 2025-2026
We’re breaking down the cases we've asked the court to consider this term.
Latest Case Updates
Closed (Judgment)
Updated June 29, 2026
Ongoing
Updated June 26, 2026
Ongoing
Updated June 25, 2026
Closed (Judgment)
Updated June 18, 2026
Featured
Massachusetts
Jul 2026
Voting Rights
League of Women Voters of Massachusetts v. Trump
On March 31, 2026, President Trump issued a sweeping Executive Order titled "Ensuring Citizen Verification and Integrity in Federal Elections," seeking once again to seize control of election administration from Congress and the states. The Order directs federal agencies to compile lists of U.S. citizens and transmit them to states before every election, directs the U.S. Postal Service -- an independent agency established by Congress -- to create a list of "approved" mail voters, and instructs USPS to refuse to deliver ballots from voters not on that federally created list. If implemented, the Order would threaten the ability of millions of eligible citizens to cast their ballots, particularly military members, overseas citizens, the elderly, recently naturalized citizens, and voters with disabilities who rely on mail voting.
Florida
Jul 2026
National Security
+2 Issues
CAIR-Foundation, Inc and CAIR Florida, Inc. v. DeSantis et al.
The ACLU, the ACLU of Florida, the Southern Poverty Law Center, and their partners represent CAIR and CAIR-Florida in two federal lawsuits challenging Governor DeSantis’s unconstitutional and baseless designation of the nonprofits as “terrorist.” The lawsuits allege violations of CAIR and CAIR-Florida’s rights under the First Amendment and the due process clause of the Fourteenth Amendment.
New Hampshire
Jul 2026
Voting Rights
Coalition for Open Democracy v. Scanlan
This lawsuit challenges HB 1569, a new law that will make New Hampshire the only state to require every person to produce documentary proof of citizenship when they register to vote for both state and federal elections. It also challenges HB 1569’s elimination a preexisting protection for voters—namely, an affidavit option that allowed voters who faced surprise challenges to their eligibility at the polls to swear to their qualifications and cast a ballot. Accordingly, HB 1569 violates the First and Fourteenth Amendments of the U.S. Constitution by placing substantial burdens on New Hampshirites at all stages of the voting process, and will arbitrarily disenfranchise hundreds, if not thousands of qualified voters.
Court Case
May 2026
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
May 2026
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.
U.S. Supreme Court
Apr 2026
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.
Tennessee Supreme Court
Apr 2026
Capital Punishment
Tony Von Carruthers v. State of Tennessee
Tennessee plans to execute Tony Carruthers on May 21 even though they refuse to run a simple fingerprint comparison and DNA testing that could prove what Tony has been arguing for 30 years - that he is innocent of this crime and that Tennessee convicted and sentenced the wrong man to death.
U.S. Supreme Court
Feb 2026
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.
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.
All Cases
1,720 Court Cases
U.S. Supreme Court
May 2023
Voting Rights
Racial Justice
Harness v. Watson (Amicus)
Whether Mississippi’s 1890 felony disenfranchisement law, adopted for the express purpose of disenfranchising Black voters, violates the Fourteenth Amendment’s Equal. Protection Clause.
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U.S. Supreme Court
May 2023
Voting Rights
Racial Justice
Harness v. Watson (Amicus)
Whether Mississippi’s 1890 felony disenfranchisement law, adopted for the express purpose of disenfranchising Black voters, violates the Fourteenth Amendment’s Equal. Protection Clause.
U.S. Supreme Court
May 2023
Capital Punishment
Reed v. Goertz
When a prisoner pursues state post-conviction DNA testing through the state-provided litigation process, when does the statute of limitations for a 42 U.S.C. § 1983 procedural due process claim begin to run?
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U.S. Supreme Court
May 2023
Capital Punishment
Reed v. Goertz
When a prisoner pursues state post-conviction DNA testing through the state-provided litigation process, when does the statute of limitations for a 42 U.S.C. § 1983 procedural due process claim begin to run?
U.S. Supreme Court
May 2023
Immigrants' Rights
Huisha-Huisha v. Mayorkas
Under Title 42, the federal government invoked the COVID pandemic to bar migrants from entering the country without an opportunity to seek asylum. The Trump administration originally invoked Title 42, but it was continued by the Biden administration. This suit challenged the legality of barring refugees from asylum based on Title 42.
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U.S. Supreme Court
May 2023
Immigrants' Rights
Huisha-Huisha v. Mayorkas
Under Title 42, the federal government invoked the COVID pandemic to bar migrants from entering the country without an opportunity to seek asylum. The Trump administration originally invoked Title 42, but it was continued by the Biden administration. This suit challenged the legality of barring refugees from asylum based on Title 42.
Court Case
May 2023
Privacy & Technology
National Security
The Warrant Clause in the Digital Age
The information generated by today’s digital devices and online services reveals private matters far beyond what one could learn from physical analogs. In a series of legal filings and a white paper, available below, the ACLU has argued that to keep apace with technological developments and adequately protect our privacy, the Fourth Amendment's warrant requirement must be interpreted robustly. Seizures and searches of digital data must be cabined to probable cause, limited to specific categories of information relevant to the investigation, and closely overseen by a neutral magistrate.
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Court Case
May 2023
Privacy & Technology
National Security
The Warrant Clause in the Digital Age
The information generated by today’s digital devices and online services reveals private matters far beyond what one could learn from physical analogs. In a series of legal filings and a white paper, available below, the ACLU has argued that to keep apace with technological developments and adequately protect our privacy, the Fourth Amendment's warrant requirement must be interpreted robustly. Seizures and searches of digital data must be cabined to probable cause, limited to specific categories of information relevant to the investigation, and closely overseen by a neutral magistrate.
U.S. Supreme Court
May 2023
Free Speech
Gonzalez v. Trevino
This case is about what a plaintiff must demonstrate to sustain allegations that police arrested them in retaliation for First Amendment–protected expression. While retaliatory arrest plaintiffs generally must show that police lacked probable cause to arrest them, the petitioner in this case correctly argues that a recognized exception to that rule, for cases where police typically exercise discretion not to arrest people, must be robust to protect the free speech of government critics.
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U.S. Supreme Court
May 2023
Free Speech
Gonzalez v. Trevino
This case is about what a plaintiff must demonstrate to sustain allegations that police arrested them in retaliation for First Amendment–protected expression. While retaliatory arrest plaintiffs generally must show that police lacked probable cause to arrest them, the petitioner in this case correctly argues that a recognized exception to that rule, for cases where police typically exercise discretion not to arrest people, must be robust to protect the free speech of government critics.