Pearson v. Callahan

[*227] Justice Alito delivered the opinion of the Court.

This is an action brought by respondent under Rev. Stat. § 1979, 42 U. S. C. § 1983, against state law enforcement officers who conducted a warrantless search of his house incident to his arrest for the sale of methamphetamine to an undercover informant whom he had voluntarily admitted to the premises. The Court of Appeals held that petitioners were not entitled to summary judgment on qualified immunity grounds. Following the procedure we mandated in Saucier v. Katz, 533 U. S. 194 (2001), the Court of Appeals held, first, that respondent adduced facts sufficient to make out a violation of the Fourth Amendment and, second, that the unconstitutionality of the officers’ conduct was clearly established. In granting review, we required the parties to address the additional question whether the mandatory procedure set out in Saucier should be retained.

We now hold that the Saucier procedure should not be regarded as an inflexible requirement and that petitioners are entitled to qualified immunity on the ground that it was not clearly established at the time of the search that their conduct was unconstitutional. We therefore reverse.