Mapp v Ohio

Definition

A landmark Supreme Court case in 1961 that established the principle of "exclusionary rule," which states that evidence obtained illegally cannot be used in a state law criminal prosecution.

Related terms

Exclusionary Rule: The legal principle that evidence obtained illegally cannot be used in court.

Fourth Amendment: The part of the U.S. Constitution that protects against unreasonable searches and seizures.

Due Process Clause: A clause in the U.S. Constitution that guarantees fair treatment through the normal judicial system.