United States v. Leon, 468 U.S. 897 (1984)
United States v. Leon is a landmark case in the realm of criminal procedure and Fourth Amendment jurisprudence.
Does the Fourth Amendment exclusionary rule require suppression of evidence obtained from a search where law enforcement officers acted in reasonable reliance on a search warrant issued by a detached and neutral magistrate but subsequently found to be unsupported by probable cause?
The exclusionary rule does not apply when law enforcement officers act in objectively reasonable reliance on a search warrant issued by a neutral and detached magistrate that is later found to be deficient.
The Supreme Court held that the evidence should not be suppressed, establishing the good faith exception to the exclusionary rule.
Leon significantly shifted Fourth Amendment jurisprudence by introducing the good faith exception, emphasizing an efficiency-balanced approach to the exclusionary rule. This precedent is crucial for law students to understand evolved standards of police conduct evaluations and their impacts on criminal procedure.