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  2. Exclusionary rule - Wikipedia

    en.wikipedia.org/wiki/Exclusionary_rule

    The exclusionary rule does not apply in a civil case, in a grand jury proceeding, or in a parole revocation hearing.. The law in force at the time of the police action, not the time of the attempt to introduce the evidence, controls whether the action is illegal for exclusionary rule purposes.

  3. Mapp v. Ohio - Wikipedia

    en.wikipedia.org/wiki/Mapp_v._Ohio

    Mapp v. Ohio, 367 U.S. 643 (1961), was a landmark U.S. Supreme Court decision in which the Court ruled that the exclusionary rule, which prevents a prosecutor from using evidence that was obtained by violating the Fourth Amendment to the U.S. Constitution, applies to states as well as the federal government.

  4. Good-faith exception - Wikipedia

    en.wikipedia.org/wiki/Good-faith_exception

    Ohio that the exclusionary rule also applies to state criminal prosecutions under the doctrine of incorporation. In Mapp, the majority gave three rationales for enforcing the exclusionary rule under the Constitution: protecting a defendant's Fourth Amendment rights, promoting judicial integrity, and deterring improper searches and seizures. [4]

  5. Elkins v. United States - Wikipedia

    en.wikipedia.org/wiki/Elkins_v._United_States

    Stewart wrote that the primary purpose of the exclusionary rule was to provide a disincentive to abuses by law enforcement, stating that "[t]he rule is calculated to prevent, not to repair. Its purpose is to deter—to compel respect for the constitutional guaranty in the only effectively available way—by removing the incentive to disregard it."

  6. United States v. Leon - Wikipedia

    en.wikipedia.org/wiki/United_States_v._Leon

    The exclusionary rule was part and parcel of the Fourth Amendment’s limitation upon governmental encroachment of individual privacy. The Court’s only support for its decision is that even though the costs of exclusion are not very substantial, the potential deterrent effect in these circumstances is so marginal that exclusion cannot be ...

  7. Terry v. Ohio - Wikipedia

    en.wikipedia.org/wiki/Terry_v._Ohio

    The rationale behind the Supreme Court decision revolves around the notion that, as the opinion argues, "the exclusionary rule has its limitations." According to the court, the meaning of the rule is to protect persons from unreasonable searches and seizures aimed at gathering evidence, not searches and seizures for other purposes (like ...

  8. Stone v. Powell - Wikipedia

    en.wikipedia.org/wiki/Stone_v._Powell

    If a state prisoner's claim as to a violation of the Fourth Amendment exclusionary rule has already been given a full and fair hearing by state courts, it may not be heard by federal courts in a habeas corpus petition. Court membership; Chief Justice Warren E. Burger Associate Justices William J. Brennan Jr. · Potter Stewart

  9. Inevitable discovery - Wikipedia

    en.wikipedia.org/wiki/Inevitable_discovery

    In adopting the inevitable discovery doctrine in Nix, the Supreme Court discussed the basic reasoning underlying the doctrine.The rationale behind the inevitable discovery exception is the flip side to that underlying the exclusionary rule—the exclusionary rule's purpose is to deter police from violating constitutional and statutory rights.