Illinois v. Lidster, 540 U.S. 419, 6 (2004)

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424

ILLINOIS v. LIDSTER

Opinion of the Court

Edmond's language, as well as its context, makes clear that the constitutionality of this latter, information-seeking kind of stop was not then before the Court. Edmond refers to the subject matter of its holding as "stops justified only by the generalized and ever-present possibility that interrogation and inspection may reveal that any given motorist has committed some crime." Ibid. (emphasis added). We concede that Edmond describes the law enforcement objective there in question as a "general interest in crime control," but it specifies that the phrase "general interest in crime control" does not refer to every "law enforcement" objective. Id., at 44, n. 1. We must read this and related general language in Edmond as we often read general language in judicial opinions—as referring in context to circumstances similar to the circumstances then before the Court and not referring to quite different circumstances that the Court was not then considering.

Neither do we believe, Edmond aside, that the Fourth Amendment would have us apply an Edmond-type rule of automatic unconstitutionality to brief, information-seeking highway stops of the kind now before us. For one thing, the fact that such stops normally lack individualized suspicion cannot by itself determine the constitutional outcome. As in Edmond, the stop here at issue involves a motorist. The Fourth Amendment does not treat a motorist's car as his castle. See, e. g., New York v. Class, 475 U. S. 106, 112-113 (1986); United States v. Martinez-Fuerte, 428 U. S. 543, 561 (1976). And special law enforcement concerns will sometimes justify highway stops without individualized suspicion. See Michigan Dept. of State Police v. Sitz, 496 U. S. 444 (1990) (sobriety checkpoint); Martinez-Fuerte, supra (Border Patrol checkpoint). Moreover, unlike Edmond, the context here (seeking information from the public) is one in which, by definition, the concept of individualized suspicion has little role to play. Like certain other forms of police activity, say,

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