--- title: "Wong Sun v. United States" citation: "Wong Sun v. United States, 371 U.S. 471 (1963)" authority_id: "AUTH-SCOTUS-WONG-SUN-371-US-471" authority_type: "case" jurisdiction: "federal_nationwide" precedential_status: "binding" official_url: "https://www.govinfo.gov/content/pkg/USREPORTS-371/pdf/USREPORTS-371-471.pdf" url: "https://jason93.com/legal/federal-process/authorities/AUTH-SCOTUS-WONG-SUN-371-US-471/" legal_review: "2026-08-25" links_checked: "2026-10-15" links_available: 1 links_checked_count: 1 license: "CC BY 4.0" --- # Wong Sun v. United States ## Holding used Derivative evidence turns on exploitation of illegality versus sufficiently distinguishable means, not bare but-for causation. ## Material limitation Attenuation, independent source, inevitable discovery, standing, and specific evidence types require their controlling law and facts. ## Official source and pinpoints 371 U.S. 471, 484–91 (1963): ## Used in - [Suppression, Severance, and Pretrial Evidentiary Motions](https://jason93.com/legal/federal-process/modules/20-pretrial/suppression-severance-and-pretrial-motions.md)