information:classification
Exclusionary rule

The Court adopted the exclusionary rule in Weeks v. United States (1914), prior to which all evidence, no matter how seized, could be admitted in court. In Silverthorne Lumber Co. v. United States (1920) and Nardone v. United States (1939), the Court ruled that leads or other evidence resulting from illegally obtained evidence are also inadmissible in trials. Justice Felix Frankfurter described this secondary evidence in the Nardone decision as the " fruit of the poisonous tree ". The Supreme Court rejected incorporating the exclusionary rule by way of the Fourteenth Amendment in Wolf v. Colorado (1949), but Wolf was explicitly overruled in Mapp v. Ohio (1961), making the Fourth Amendment (including the exclusionary rule) applicable in state proceedings.