Arizona v. Evans, 514 U.S. 1, 11 (1995)

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Cite as: 514 U. S. 1 (1995)

Opinion of the Court

906; Calandra, supra, at 348. As with any remedial device, the rule's application has been restricted to those instances where its remedial objectives are thought most efficaciously served. Leon, supra, at 908; Calandra, supra, at 348. Where "the exclusionary rule does not result in appreciable deterrence, then, clearly, its use . . . is unwarranted." United States v. Janis, 428 U. S. 433, 454 (1976).

In Leon, we applied these principles to the context of a police search in which the officers had acted in objectively reasonable reliance on a search warrant, issued by a neutral and detached Magistrate, that later was determined to be invalid. 468 U. S., at 905. On the basis of three factors, we determined that there was no sound reason to apply the exclusionary rule as a means of deterring misconduct on the part of judicial officers who are responsible for issuing warrants. See Illinois v. Krull, 480 U. S. 340, 348 (1987) (analyzing Leon, supra). First, we noted that the exclusionary rule was historically designed " 'to deter police misconduct rather than to punish the errors of judges and magistrates.' " Krull, supra, at 348 (quoting Leon, supra, at 916). Second, there was " 'no evidence suggesting that judges and magistrates are inclined to ignore or subvert the Fourth Amendment or that lawlessness among these actors requires the application of the extreme sanction of exclusion.' " Krull, supra, at 348 (quoting Leon, supra, at 916). Third, and of greatest importance, there was no basis for believing that exclusion of evidence seized pursuant to a warrant would have a significant deterrent effect on the issuing judge or magistrate. Krull, supra, at 348.

The Leon Court then examined whether application of the exclusionary rule could be expected to alter the behavior of the law enforcement officers. We concluded:

"[W]here the officer's conduct is objectively reasonable, 'excluding the evidence will not further the ends of the exclusionary rule in any appreciable way; for it is painfully apparent that . . . the officer is acting as a reason-


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