Also known as: exclusion doctrines · exclusionary doctrine · exclusionary rule
Written by attorneys · grounded in primary & secondary sources — see below
A judicially created remedy that bars the admission of evidence obtained through unconstitutional searches or seizures in criminal proceedings. The doctrine deters police misconduct by excluding evidence secured in violation of the Fourth Amendment as incorporated through the Fourteenth Amendment.
Eileen Epstein was arrested in her apartment after state officers conducted a warrantless search and seized documents. She moved to suppress the documents in her state criminal trial. The court granted the motion because the officers violated the Fourth Amendment and the exclusion doctrine applies to state proceedings through the Fourteenth Amendment.
Emmett Egan was arrested outside his office after a dispatcher reported an active warrant that had actually been quashed due to a single clerical oversight in the database. Officers seized his laptop containing incriminating files. The court denied suppression because the officers reasonably relied on the warrant information and the isolated negligence did not trigger the exclusion doctrine.
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Elijah Edwards was stopped unlawfully and officers found a notebook listing storage unit locations. Using the notebook they obtained a warrant and seized falsified documents from the units. The court admitted the documents because the prosecution showed the units would have been located through independent consumer complaints and the exclusion doctrine did not apply under inevitable discovery.
Elena Estrada's home was searched under a warrant later found to lack probable cause. Officers had relied on the warrant issued by a neutral magistrate without knowing of any defects. The court denied the suppression motion because the officers acted in objectively reasonable good faith and the exclusion doctrine did not require suppression.
Enzo Eastwood's cabin was searched without authority and officers found a log of rendezvous coordinates. They used the log to obtain a surveillance warrant and seized narcotics at sea. The court suppressed the narcotics because they were obtained by exploiting the initial illegality and the exclusion doctrine barred the fruit of the poisonous tree.
Evelyn Ellison was stopped without reasonable suspicion and officers discovered an outstanding warrant for an unrelated matter. They arrested her and found methamphetamine in her car during a search incident to arrest. The court denied suppression because the valid warrant was an intervening circumstance that attenuated the taint and the exclusion doctrine did not apply.
Yes. The doctrine prohibits the use of evidence obtained in violation of the Fourth Amendment in state proceedings through the Fourteenth Amendment's Due Process Clause.
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The exception applies when officers reasonably rely on a warrant that is later found defective due to clerical errors or lack of probable cause, provided the reliance is objectively reasonable and the warrant was issued by a neutral magistrate.
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Evidence is admissible if the prosecution proves the police would have discovered it through lawful means even without the unconstitutional conduct.
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The exclusion doctrine bars not only directly obtained evidence but also derivative evidence acquired by exploiting an initial constitutional violation unless an exception such as attenuation or independent source applies.
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…recently fixed as Department of Justice policy. See Beaney, Right to Counsel 29-30, 36-42 (1955). In Mapp , which imposed the exclusionary rule on the States for Fourth Amendment violations, more than half of the States had themselves already adopted some such rule. See 367 U. S., at 651. In Gideon , which extended Johnson v.…