Whether a state prosecutor is subject to a damages action under 42 U.S.C. § 1983 for alleged constitutional violations committed while initiating and pursuing a criminal prosecution.
Holding
No. A prosecutor has absolute immunity from § 1983 damages liability for acts intimately associated with the judicial phase of the criminal process, including initiating a prosecution and presenting the State's case.
Reasoning
Although § 1983 literally makes every state actor who deprives a person of constitutional rights liable for damages, the Court reads the statute against established common-law immunities. Earlier decisions preserved absolute immunity for legislators and judges where history and public policy strongly supported it, while affording other officials only qualified immunity. The prosecutor's immunity therefore turns on the historical immunity for the relevant function and the reasons supporting that immunity, not merely on the prosecutor's placement in the executive branch.
At common law, prosecutors generally enjoyed absolute immunity from malicious-prosecution suits for decisions to bring and pursue criminal charges. The rule reflected the prosecutor's role in exercising discretionary judgment comparable, in this respect, to the judgment exercised by judges and grand jurors. The Court treated this entrenched common-law rule as strong evidence that Congress did not silently eliminate the immunity when it enacted § 1983.
The policy reasons for absolute immunity apply with particular force to prosecutorial advocacy. A prosecutor must make difficult judgments about whether to charge, what evidence to present, and which witnesses to call, often under time and informational constraints. A qualified-immunity regime would expose those decisions to frequent retaliatory suits by disappointed defendants and could cause prosecutors to act defensively rather than independently and vigorously.
Litigation over prosecutorial decisions would also be unusually burdensome and difficult to resolve. Claims concerning a prosecutor's knowledge of false testimony, the materiality of undisclosed evidence, or the constitutional propriety of trial argument can require a virtual retrial of the underlying criminal case, often years later. The prospect of personal liability could divert prosecutors from their public duties and make them reluctant to present evidence whose credibility is open to dispute.
The Court acknowledged that absolute immunity may leave a person harmed by a dishonest prosecutor without a civil damages remedy against that prosecutor. But it concluded that this cost is outweighed by the public interest in fearless prosecutorial advocacy and impartial post-conviction review. Prosecutors remain subject to criminal prosecution and professional discipline for willful misconduct, even though they are immune from this particular civil damages suit.