This book is the 2025 case supplement to Constitutional Law, Ninth Edition by Geoffrey R. Stone, Louis M. Seidman, Cass R. Sunstein, Mark V. Tushnet, Pamela S. Karlan, Aziz Z. Huq, and Leah M. Litman. The 2025 Annual Supplement, like prior Supplements, includes excerpts from recent scholarship and from important new decisions of the Supreme Court—including major cases on the distribution of national powers and equality. This term reflects the continued shift in the orientation of the Court after the appointment by President Trump of three new Justices. New to the 2025 Supplement: Free Speech Coalition, Inc. v. Paxton TikTok, Inc. v. Garland United States v. Skrmetti Mahmoud v. Taylor Noem v. Abrego Garcia Department of Education v. California Professors and students will benefit from: Judicious excerpts of recent opinions Additional commentary on recent merits jurisprudence Coverage of “shadow” docket, with particular attention to post-inauguration cases.