Cite as: 517 U. S. 806 (1996)
Opinion of the Court
a traffic-violation arrest (of the sort here) would not be rendered invalid by the fact that it was "a mere pretext for a narcotics search," id., at 221, n. 1; and that a lawful post-arrest search of the person would not be rendered invalid by the fact that it was not motivated by the officer-safety concern that justifies such searches, see id., at 236. See also Gustafson v. Florida, 414 U. S. 260, 266 (1973). And in Scott v. United States, 436 U. S. 128, 138 (1978), in rejecting the contention that wiretap evidence was subject to exclusion because the agents conducting the tap had failed to make any effort to comply with the statutory requirement that unauthorized acquisitions be minimized, we said that "[s]ubjective intent alone . . . does not make otherwise lawful conduct illegal or unconstitutional." We described Robinson as having established that "the fact that the officer does not have the state of mind which is hypothecated by the reasons which provide the legal justification for the officer's action does not invalidate the action taken as long as the circumstances, viewed objectively, justify that action." 436 U. S., at 136, 138.
We think these cases foreclose any argument that the
constitutional reasonableness of traffic stops depends on the actual motivations of the individual officers involved. We of course agree with petitioners that the Constitution prohibits selective enforcement of the law based on considerations such as race. But the constitutional basis for objecting to intentionally discriminatory application of laws is the Equal Protection Clause, not the Fourth Amendment. Subjective intentions play no role in ordinary, probable-cause Fourth Amendment analysis.
Recognizing that we have been unwilling to entertain Fourth Amendment challenges based on the actual motivations of individual officers, petitioners disavow any intention to make the individual officer's subjective good faith the touchstone of "reasonableness." They insist that the stand-
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