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  2. Exclusionary rule - Wikipedia

    en.wikipedia.org/wiki/Exclusionary_rule

    In the United States, the exclusionary rule is a legal rule, based on constitutional law, that prevents evidence collected or analyzed in violation of the defendant 's constitutional rights from being used in a court of law. This may be considered an example of a prophylactic rule formulated by the judiciary in order to protect a constitutional ...

  3. Good-faith exception - Wikipedia

    en.wikipedia.org/wiki/Good-faith_exception

    In United States constitutional law and criminal procedure, the good-faith exception (also good-faith doctrine) is one of the limitations on the exclusionary rule of the Fourth Amendment. [ 1 ] For criminal proceedings, the exclusionary rule prohibits entry of evidence obtained through an unreasonable search and seizure , such as one executed ...

  4. Murray v. United States - Wikipedia

    en.wikipedia.org/wiki/Murray_v._United_States

    Murray v. United States, 487 U.S. 533 (1988), was a United States Supreme Court decision that created the modern "independent source doctrine" exception to the exclusionary rule. The exclusionary rule makes most evidence gathered through violations of the Fourth Amendment to the United States Constitution inadmissible in criminal trials as ...

  5. United States v. Leon - Wikipedia

    en.wikipedia.org/wiki/United_States_v._Leon

    Brennan, joined by Marshall. Dissent. Stevens. Laws applied. U.S. Const. amend. IV. United States v. Leon, 468 U.S. 897 (1984), was a United States Supreme Court case in which the Court established the "good faith" exception to the Fourth Amendment exclusionary rule. [1]

  6. Independent source doctrine - Wikipedia

    en.wikipedia.org/wiki/Independent_source_doctrine

    Independent source doctrine. In US law, the independent source doctrine is an exception to the exclusionary rule. [1] The doctrine applies to evidence initially discovered during, or as a consequence of, an unlawful search, but later obtained independently from activities untainted by the initial illegality. [2]

  7. Nix v. Williams - Wikipedia

    en.wikipedia.org/wiki/Nix_v._Williams

    Nix v. Williams, 467 U.S. 431 (1984), was a U.S. Supreme Court case that created an "inevitable discovery" exception to the exclusionary rule.The exclusionary rule makes most evidence gathered through violations of the Fourth Amendment to the United States Constitution, which protects against unreasonable search and seizure, inadmissible in criminal trials as "fruit of the poisonous tree".

  8. Inevitable discovery - Wikipedia

    en.wikipedia.org/wiki/Inevitable_discovery

    Inevitable discovery is a doctrine in United States criminal procedure that permits admission of evidence that was obtained through illegal means if it would "inevitably" have been obtained regardless of the illegality. [1] It is one of several exceptions to the exclusionary rule, or the related fruit-of-the-poisonous tree doctrine, which ...

  9. Fourth Amendment to the United States Constitution - Wikipedia

    en.wikipedia.org/wiki/Fourth_Amendment_to_the...

    A warrant is needed for most search and seizure activities, but the Court has carved out a series of exceptions for consent searches, motor vehicle searches, evidence in plain view, exigent circumstances, border searches, and other situations. The exclusionary rule is one way the amendment is enforced.