The Fourth Amendment's Exclusionary Rule: Blurring the Line Between Rule and Exception

Abstract

The admissibility of unlawfully obtained evidence in criminal proceedings has generated controversy throughout the common law world. In the United States, there has been renewed debate in recent years over the propriety of the judicially-created exclusionary rule as a remedy for violations of the Fourth Amendment guarantee against unreasonable searches and seizures. When defining the scope and purpose of the rule, the US Supreme Court has placed ever increasing emphasis on the likely deterrent effect which suppressing evidence will exert on law enforcement. This article explores the consequent restriction of the exclusionary rule evinced in the contemporary case law including United States v Herring in which the Supreme Court expanded the scope of the so-called "good faith" exception. In conclusion it offers reflection from the perspective of another common law country, Ireland, where the exclusion of unconstitutionally obtained evidence has been the subject of debate.