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 July 29, 2026
Ongoing
Updated July 29, 2026
Closed (Judgment)
Updated June 29, 2026
Closed (Judgment)
Updated June 18, 2026
Featured
Massachusetts
Aug 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.
Court Case
Jul 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.
Arizona
Jul 2026
Prisoners' Rights
Jensen v. Thornell
UPDATE: On July 17, 2026, U.S. District Judge Roslyn O. Silver issued an order formally appointing a receiver to assume control and management of health care provided to more than 25,000 people incarcerated in Arizona Department of Corrections, Rehabilitation, and Reentry (ADCRR) prisons, in a long-running lawsuit against the state prison system brought by the Prison Law Office, the American Civil Liberties Union (ACLU), ACLU of Arizona, and Disability Rights Arizona. More details here.
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.
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.
All Cases
1,736 Court Cases
U.S. Supreme Court
Jul 2025
Voting Rights
Bost v. Illinois State Board of Elections (Amicus)
Congressman Michael Bost brought suit trying to prevent Illinois from counting mail ballots that are voted by election day and received within the following fourteen days, consistent with Illinois law. The Seventh Circuit ruled that Congressman Bost lacks standing to sue. Bost sought certiorari from the U.S. Supreme Court on the question whether he has standing as a federal candidate to bring his lawsuit and have it decided on the merits.
While the ACLU strongly opposes Congressman Bost’s position on the merits and has repeatedly defended similar state laws from challenge, the rules that determine whether Bost has standing to even bring his anti-voter lawsuit also apply to civil rights groups when they bring suit to expand or protect the rights of voters.
Explore case
U.S. Supreme Court
Jul 2025
Voting Rights
Bost v. Illinois State Board of Elections (Amicus)
Congressman Michael Bost brought suit trying to prevent Illinois from counting mail ballots that are voted by election day and received within the following fourteen days, consistent with Illinois law. The Seventh Circuit ruled that Congressman Bost lacks standing to sue. Bost sought certiorari from the U.S. Supreme Court on the question whether he has standing as a federal candidate to bring his lawsuit and have it decided on the merits.
While the ACLU strongly opposes Congressman Bost’s position on the merits and has repeatedly defended similar state laws from challenge, the rules that determine whether Bost has standing to even bring his anti-voter lawsuit also apply to civil rights groups when they bring suit to expand or protect the rights of voters.
U.S. Supreme Court
Jul 2025
Capital Punishment
Anthony Wainwright v. Governor of Florida et al.
Anthony Wainwright, who was facing imminent execution in Florida, attempted to file a petition in the Florida Supreme Court with the assistance of his pro bono counsel of choice. The court dismissed the petition only because his court-appointed refused to file it, despite the fact that Mr. Wainwright was entitled to do so under Florida law. He asked the United States Supreme Court to review his case to decide whether the Florida court’s action deprived him his constitutional right of access to the courts and his Sixth Amendment right to counsel. The United States Supreme Court refused to review the case, and the State of Florida executed him on June 10, 2025.
Explore case
U.S. Supreme Court
Jul 2025
Capital Punishment
Anthony Wainwright v. Governor of Florida et al.
Anthony Wainwright, who was facing imminent execution in Florida, attempted to file a petition in the Florida Supreme Court with the assistance of his pro bono counsel of choice. The court dismissed the petition only because his court-appointed refused to file it, despite the fact that Mr. Wainwright was entitled to do so under Florida law. He asked the United States Supreme Court to review his case to decide whether the Florida court’s action deprived him his constitutional right of access to the courts and his Sixth Amendment right to counsel. The United States Supreme Court refused to review the case, and the State of Florida executed him on June 10, 2025.
North Dakota
Jul 2025
Voting Rights
Turtle Mountain Band of Chippewa Indians v. Howe (Amicus)
In Arkansas State Conference NAACP v. Arkansas Board of Apportionment, the 8th Circuit became the first federal appeals court to rule that private plaintiffs cannot enforce Section 2 of the Voting Rights Act. In doing so, the court left open the question whether private plaintiffs could enforce Section 2 through an alternative civil rights statute, 42 U.S.C. § 1983. In this case, a divided panel on the 8th Circuit has held that plaintiffs may not use Section 1983, either. If the holding stands, Section 2 of the VRA will be functionally out of reach for voters across the 8th Circuit in Arkansas, Iowa, Minnesota, Missouri, Nebraska, North Dakota, and South Dakota. On behalf of the NAACP Arkansas State Conference and the Arkansas Public Policy Panel, the ACLU and ACLU of Arkansas has filed a brief supporting the plaintiffs' request that the full Eighth Circuit rehear and correct this decision.
Explore case
North Dakota
Jul 2025
Voting Rights
Turtle Mountain Band of Chippewa Indians v. Howe (Amicus)
In Arkansas State Conference NAACP v. Arkansas Board of Apportionment, the 8th Circuit became the first federal appeals court to rule that private plaintiffs cannot enforce Section 2 of the Voting Rights Act. In doing so, the court left open the question whether private plaintiffs could enforce Section 2 through an alternative civil rights statute, 42 U.S.C. § 1983. In this case, a divided panel on the 8th Circuit has held that plaintiffs may not use Section 1983, either. If the holding stands, Section 2 of the VRA will be functionally out of reach for voters across the 8th Circuit in Arkansas, Iowa, Minnesota, Missouri, Nebraska, North Dakota, and South Dakota. On behalf of the NAACP Arkansas State Conference and the Arkansas Public Policy Panel, the ACLU and ACLU of Arkansas has filed a brief supporting the plaintiffs' request that the full Eighth Circuit rehear and correct this decision.
U.S. Supreme Court
Jul 2025
Religious Liberty
Catholic Charities Bureau, Inc. v. Wisconsin Labor & Industry Review Comm'n
On March 5, 2025, the ACLU and its allies filed an amicus brief with the U.S. Supreme Court arguing that the First Amendment does not prohibit states from offering limited, categorical religious exemptions or from distinguishing between religious and nonreligious entities and activities in assessing the applicability of exemptions.
Explore case
U.S. Supreme Court
Jul 2025
Religious Liberty
Catholic Charities Bureau, Inc. v. Wisconsin Labor & Industry Review Comm'n
On March 5, 2025, the ACLU and its allies filed an amicus brief with the U.S. Supreme Court arguing that the First Amendment does not prohibit states from offering limited, categorical religious exemptions or from distinguishing between religious and nonreligious entities and activities in assessing the applicability of exemptions.
Kentucky
Jul 2025
Reproductive Freedom
Mary Poe v. Russell Coleman, et al.
A Kentucky woman who was pregnant and seeking an abortion filed a lawsuit in Jefferson County Circuit Court seeking to restore access to abortion in the Commonwealth by challenging two abortion bans under the state constitutional rights to privacy and self-determination. The case details the severe harms that Kentuckians seeking abortion, like Plaintiff Mary Poe suffer because the government denies them access to the care they need. The lawsuit also requests the court certify a class of all pregnant individuals who seek access to abortion in the Commonwealth but cannot obtain that care because of Kentucky’s abortion bans.
Explore case
Kentucky
Jul 2025
Reproductive Freedom
Mary Poe v. Russell Coleman, et al.
A Kentucky woman who was pregnant and seeking an abortion filed a lawsuit in Jefferson County Circuit Court seeking to restore access to abortion in the Commonwealth by challenging two abortion bans under the state constitutional rights to privacy and self-determination. The case details the severe harms that Kentuckians seeking abortion, like Plaintiff Mary Poe suffer because the government denies them access to the care they need. The lawsuit also requests the court certify a class of all pregnant individuals who seek access to abortion in the Commonwealth but cannot obtain that care because of Kentucky’s abortion bans.