Title 18 › PART II — CRIMINAL PROCEDURE › CHAPTER 223 — WITNESSES AND EVIDENCE › § 3504
When a person argues that evidence should be kept out because it is the main result of an illegal act or was gotten by taking advantage of an illegal act, the other side must say whether that illegal act happened. You do not have to hand over information about an illegal act that happened before June 19, 1968 unless that information could matter to a current claim that the evidence is tainted. Also, if the illegal act was before June 19, 1968 and the event tied to the evidence happened more than five years later, you cannot claim the evidence is inadmissible for being obtained by exploiting that old illegal act. "Unlawful act" means using any electronic, mechanical, or other device (as defined in the law) in a way that breaks the Constitution, federal law, or rules made under them.
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Crimes and Criminal Procedure, Source: USLM XML via OLRC
Legislative History
Reference
Citation
18 U.S.C. § 3504
Title 18, Crimes and Criminal Procedure
Last Updated
Aug 21, 2026
Release point: 119-102