Mapp v. Ohio · ¶39

Federal-state cooperation in the solution of crime under constitutional standards will be promoted, if only by recognition of their now mutual obligation to respect the same fundamental criteria in their approaches. “However much in a particular case insistence upon such rules may appear as a technicality that inures to the benefit of a guilty person, the history of the criminal law proves that tolerance of shortcut methods in law enforcement impairs its enduring effectiveness.” Miller v. United States, 357 U. S. 301, 313 (1958). Denying shortcuts to only one of two cooperating law enforcement agencies tends naturally to breed legitimate suspicion of “working arrangements” whose results are equally tainted. Byars v. United States, 273 U. S. 28 (1927); Lustig v. United States, 338 U. S. 74 (1949).

U. S. Reports, bound volume
U. S. Reports, volume 367, at 643 (Library of Congress) · transcription: Caselaw Access Project
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