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exclusionary rule

noun

Definition of exclusionary rule

  1. :  a legal rule that bars unlawfully obtained evidence from being used in court proceedings



1964

First Known Use of exclusionary rule

1964


Law Dictionary

exclusionary rule

noun

Legal Definition of exclusionary rule

  1. :  any of various rules that exclude or suppress evidence; specifically :  a rule of evidence that excludes or suppresses evidence obtained in violation of a defendant's constitutional rights — see also fruit of the poisonous tree, good faith exception, Mapp v. Ohio and Wong Sun v. United States



Additional Notes on exclusionary rule

The U.S. Supreme Court established the rule that evidence gathered by a governmental agent in violation of especially the Fourth and Fifth Amendments to the U.S. Constitution cannot be admitted against a defendant. The rule is available primarily in criminal trials or quasi-criminal proceedings (as punitive administrative hearings) and must also be observed by state courts. There are various statutory exclusionary rules in addition to the rule established by the Supreme Court.


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