389 U.S. 347 (1967) Cited 12,696 times 74 Legal Analyses
Holding that failure to recognize a reasonable expectation of privacy in a telephone booth would "ignore the vital role that the public telephone has come to play in private communication"
439 U.S. 128 (1978) Cited 6,491 times 27 Legal Analyses
Holding that the determinative question is "whether the person who claims the protection of the Amendment has a legitimate expectation of privacy in the invaded place"
415 U.S. 143 (1974) Cited 467 times 1 Legal Analyses
Holding that the interception of a wife's conversations on her home telephone was incidental, and not in violation of the Fourth Amendment, because her criminal activities were not foreseen when the Title III wiretap order targeting her husband was obtained
408 U.S. 41 (1972) Cited 393 times 1 Legal Analyses
Holding that, under 18 U.S.C. § 2515, a witness called before a grand jury can refuse to answer questions based on information obtained in violation of Title III of the Omnibus Crime Control and Safe Streets Act of 1968
Holding that plaintiffs did not engage in oral communication under Title III because “they failed to present evidence demonstrating any affirmative steps taken to preserve their privacy,” and “point to no reasonable safeguards or common-sense precautions taken to preserve their expectation of privacy”
U.S. Const. amend. IV Cited 28,007 times 2 Legal Analyses
Recognizing "[t]he right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures... [without] probable cause"
18 U.S.C. § 2510 Cited 4,324 times 80 Legal Analyses
Defining "[i]nvestigative or law enforcement officer" as an officer "empowered by law to conduct investigations of or to make arrests for [certain] offenses . . . and any attorney authorized by law to prosecute or participate in the prosecution of such offenses"