Court Cases

The ACLU filed a lawsuit in San Francisco Superior Court today to protect tenants' privacy rights from landlords who force renters to allow AI-powered surveillance technology in their homes

We filed a class-action lawsuit challenging the Trump administration's policy of re-arresting and re-detaining immigrants the government previously had released from custody after concluding they were neither dangerous nor a flight risk.

We filed a class-action lawsuit challenging the Trump administration's policy of arresting immigrants when they appear for court in Northern California and holding them in inhumane conditions inside the San Francisco ICE field office.

We filed a motion in federal court to prevent Meta from complying with the Department of Homeland Security’s demand that the tech giant turn over the name, email address, and phone number associated with an Instagram account that reposted a video naming a Border Patrol agent. We argue that the government’s administrative subpoena violated First Amendment protections for anonymous political speech.

National TPS Alliance v. Noem is a legal challenge to the Trump administration's early termination of Temporary Protected Status for Nepal, Honduras, and Nicaragua.

The ACLU Foundation of Northern California has filed a lawsuit to block Sonoma County code inspectors from using drones to conduct surveillance of people's homes without a warrant.

We're challenging the governor's authority to reverse parole as a violation of the rights of young people.

On February 19, 2025, the National TPS Alliance and seven Venezuelan TPS holders sued the Department of Homeland Security (DHS) to challenge the vacatur of the previously ordered extension of TPS for Venezuela, and the subsequent termination. On March 20, 2025, the plaintiffs amended the complaint to also challenge the vacatur of the full TPS extension for 500,000 Haitians, with four Haitian TPS holders joining as plaintiffs. The plaintiffs are represented by the National Day Laborer Organizing Network (NDLON), the ACLU Foundations of Northern California and Southern California, the Center for Immigration Law and Policy (CILP) at UCLA School of Law, and the Haitian Bridge Alliance.

The ACLUs of California and Keker, Van Nest & Peters LLP sued the Dept. of Homeland Security, Customs and Border Protection, and U.S. Border Patrol for violating the U.S. Constitution and federal law by indiscriminately stopping, detaining, and arresting people of color regardless of their actual immigration status or individual circumstances.