Mapp v. Ohio [1961]
367 U.S. 643 (1961) · Supreme Court of the United States · United States
Summary
Major incorporation decision for search-and-seizure remedies.
Facts
Police searched Dollree Mapp's home without a valid warrant and found evidence later used in prosecution.
Issue
Does the exclusionary rule apply to the states?
Held
Yes. Unconstitutionally obtained evidence is inadmissible in state criminal trials.
Ratio Decidendi
Evidence obtained in violation of the Fourth Amendment is generally excluded in state and federal prosecutions.
Reasoning
Exclusion deters unlawful searches and gives effect to Fourth Amendment rights.
Significance
Major incorporation decision for search-and-seizure remedies.
Related Cases
No related cases listed.
Exam Tips
Review the ratio and reasoning before applying this case in problem questions.