Illinois v. Krull

In United States v. Leon, 468 U. S. 897 (1984), this Court ruled that the Fourth Amendment exclusionary rule does not apply to evidence obtained by police officers who acted in objectively reasonable reliance upon a search warrant issued by a neutral magistrate, but where the warrant was ultimately found to be unsupported by probable cause. See also Massachusetts v. Sheppard, 468 U. S. 981 (1984). The present case presents the question whether a similar exception to the exclusionary rule should be recognized when officers act in objectively reasonable reliance upon a statute authorizing…