Mapp v. Ohio
Significance, Court Applies Exclusionary Rule To States, The Exclusionary Rule, Further Readings
State of Ohio
That the state is barred from using evidence at trial that was obtained through an unlawful search and seizure.
Chief Lawyer for Petitioner
A. L. Kearns
Chief Lawyer for Respondent
Gertrude Bauer Mahon
Justices for the Court
Hugo Lafayette Black, William J. Brennan, Jr., Tom C. Clark (writing for the Court), William O. Douglas, Potter Stewart, Earl Warren
Felix Frankfurter, John Marshall Harlan II, Charles Evans Whittaker
Date of Decision
19 June 1961
The Court held that the exclusionary rule, which prevents unconstitutionally obtained evidence from being introduced at trial, applies to states as well as to the federal government.
- Wolf v. People of the State of Colorado, 338 U.S. 25 (1949).
- Elkins v. United States, 364 U.S. 206 (1960).
- Schmerber v. California, 384 U.S. 757 (1966).
West's Encyclopedia of American Law. St. Paul, MN: West Group, 1998.
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