517 U.S. 806 (1996) Cited 8,784 times 38 Legal Analyses
Holding that, upon observing traffic violation, officer may stop vehicle regardless of his subjective motivations, "as long as the circumstances, viewed objectively, justify that action"
389 U.S. 347 (1967) Cited 12,612 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"
529 U.S. 334 (2000) Cited 304 times 9 Legal Analyses
Holding that an officers' physical manipulation of a bus passenger's bag constituted a search because the exploratory manner in which the bag was felt exceeded the usual handling that would be expected
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”
Finding Section 2518(b) satisfied by similarly descriptive allegations of defendant's involvement in narcotics trafficking supported by statements from informants and corroborated by agents participating in controlled buys, as well as defendant's prior criminal involvement in similar offenses
Holding videotaping defendants in hotel room while consenting informants were in the room was not a search because defendants were not overnight guests in the hotel room, but were only there to conduct a business transaction at the invitation of the occupants, and when informants were in the room, defendants bore the risk they were being surveilled
Holding that the defendant had standing to seek to suppress communications because his “conversations were the target of the surveillance” even if he was not always a participant
18 U.S.C. § 2510 Cited 4,297 times 79 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"