Whether courts must always follow Saucier v. Katz's mandatory two-step sequence by deciding first whether a constitutional violation occurred and only then whether the right was clearly established.
Holding
No. The Saucier sequence remains often useful, but it is not an inflexible requirement; lower courts may use their sound discretion to decide which qualified-immunity prong to address first.
Reasoning
Qualified immunity protects officials from damages unless they violate clearly established statutory or constitutional rights of which a reasonable person would have known. Because it is immunity from suit, not simply a defense at trial, courts should resolve it at the earliest feasible stage. Saucier had required courts in every case to decide first whether the alleged facts established a constitutional violation and then whether the right was clearly established when the official acted.
Stare decisis did not require retaining Saucier's rigid protocol. Saucier announced a recent, judge-made rule about judicial decisionmaking, not a constitutional or statutory interpretation on which parties structure their conduct. Experience in the lower courts had also exposed practical shortcomings, and revising the rule would not upset settled reliance interests.
The constitutional-first order still has real value. Deciding the merits can clarify constitutional law, and in some cases a court cannot sensibly determine whether a right was clearly established without first defining the underlying right. The sequence is particularly valuable when the question may otherwise escape judicial resolution because qualified immunity is available.
But mandatory merits-first adjudication can force courts and parties to spend substantial resources deciding difficult constitutional questions that do not affect the result. Such rulings may offer little precedential guidance when they are intensely factbound, depend on unresolved state-law questions, arise on an undeveloped record, or concern an issue soon to be resolved by a higher court.
Rigid sequencing also conflicts with the ordinary principle of constitutional avoidance and can produce poorly considered constitutional rulings. A defendant who wins immunity after an adverse merits ruling may be unable to appeal that ruling, yet may have to choose between changing conduct in response to an effectively unreviewable decision or risking later damages claims.
The Court therefore entrusted district and appellate judges to select the order best suited to the particular case. This flexibility does not prevent courts from addressing the constitutional question first, and constitutional law can develop through criminal cases, suits for injunctive relief, municipal-liability suits, and other cases where qualified immunity is unavailable.