Court Cases

On September 25, 2025, four Washington, D.C. community members and the national immigration organization CASA sued the Trump administration to end its policy and practice of making immigration arrests in D.C. without a warrant and without probable cause. The plaintiffs are represented by the American Civil Liberties Union of the District of Columbia, American Civil Liberties Union, Amica Center for Immigrants’ Rights, CASA, National Immigration Project, the Washington Lawyers’ Committee for Civil Rights and Urban Affairs, and the law firm of Covington & Burling. Since August, federal officers from multiple agencies have made hundreds of immigration arrests in the District. The officers frequently patrol and set up checkpoints in neighborhoods where a large number of immigrants live and stop and arrest people as they go about their daily lives. The law typically requires an agent to have a warrant when arresting someone for an immigration violation. One exception to the warrant requirement is when the agent has probable cause both that a person is in the United States in violation of the law and is likely to escape before a warrant can be obtained. According to the lawsuit, the Trump administration has a policy and practice of making immigration arrests without a warrant and without an individualized determination of probable cause that the person is in the country unlawfully and that the person is a flight risk. Each plaintiff in the case was arrested, detained, and released. The lawsuit was filed as a class action. The plaintiffs seek a court ruling to prevent the government from conducting such unlawful arrests against them and others in the future. On October 3, 2025, Plaintiffs filed a motion for class certification and a motion for a preliminary injunction, to stay agency action, and for provisional class certification to ask the Court to order Defendants and their agents to stop making warrantless immigration arrests without probable cause for flight risk, as required by the Immigration and Nationality Act.

A coalition of civil rights orgs sued President Trump and high-level officials for tear-gassing protesters outside the White House on June 1, 2020.

In 2015, police officers shot tear gas at two legal observers with bright green "Legal Observer" hats. The court ruled that words printed on clothing are not entitled to First Amendment protections. Together with the National ACLU and the ACLU of Missouri, we petitioned SCOTUS to review the case.

The ACLU-DC filed a lawsuit on behalf of two photojournalists against the District of Columbia and 8 D.C. Metropolitan Police Department officers for unleashing chemical irritants and stun grenades one month after the D.C. Council instilled a ban on the use of these weapons during demonstrations.

On April 28, 2021, the ACLU-DC filed three D.C. Freedom of Information Act requests with multiple District agencies to ask for information regarding Mr. Young's death.