Since 1871, a federal statute has authorized Americans to sue state and local officials for violating their constitutional rights. But since 1982, thanks to the court-invented doctrine of qualified immunity, such claims have been allowed only when they allege violations of "clearly established" law.
Because courts often require plaintiffs to meet that standard by citing precedents involving closely similar facts, qualified immunity can prove insurmountable even for victims of outrageous abuses. But as two recent cases illustrate, there are limits to this license for misconduct, meaning officials may still be held accountable when they flout longstanding constitutional principles, even when they do so in novel ways.
