Wong Sun Doctrine

Under the Wong Sun doctrine evidence seized as a result of a Fourth Amendment violation and evidence derived from the violation is inadmissible at trial. Wong Sun v. United States, 371 U.S. 471 (1963).  If the prosecution can demonstrate that the derived evidence comes from an independent source, would have inevitably been discovered, or if there is sufficient attenuation between the violation and derived evidence then the derived evidence is admissible.

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