County of Sacramento v. Lewis: The Purpose-to-Harm Standard

County of Sacramento v. Lewis, decided by the Supreme Court in 1998, set the constitutional standard for suing police over injuries and deaths caused by high-speed chases. The Court held that an officer’s conduct during a pursuit violates the Fourteenth Amendment’s due process guarantee only when the officer acts with a purpose to cause harm unrelated to the legitimate goal of making an arrest. That standard is extraordinarily hard to meet. In practical terms, it closed the federal courthouse door on most civil rights claims arising from police pursuits, and it remains the controlling law more than twenty-five years later.¹

The Chase That Produced the Rule

On the evening of May 22, 1990, Sacramento County Sheriff’s Deputy James Smith and Sacramento Police Officer Murray Stapp were responding to a fight call when a motorcycle sped past them. Eighteen-year-old Brian Willard was driving; sixteen-year-old Philip Lewis was riding as a passenger. When Stapp tried to block the motorcycle, Willard squeezed between the two patrol cars and accelerated away. Smith turned around and pursued with his emergency lights on.¹

The chase lasted about seventy-five seconds over roughly 1.3 miles of residential streets. The motorcycle wove through oncoming traffic, forced two cars and a bicycle off the road, and ran four traffic signals. Speeds reached 100 miles per hour, with Smith following as close as 100 feet behind. At that distance, his patrol car would have needed 650 feet to stop.¹

The motorcycle tipped over on a sharp turn. Smith hit the brakes and skidded 147 feet before striking Lewis at about 40 miles per hour, throwing the teenager nearly 70 feet. Lewis died at the scene from massive internal injuries and a fractured skull.²

Lewis’s family sued under 42 U.S.C. § 1983, the federal statute that lets people sue government officials who violate their constitutional rights on the job.³ Their theory was that Smith’s decision to maintain a high-speed chase over a minor traffic matter violated substantive due process under the Fourteenth Amendment, which forbids government action so arbitrary that no legitimate purpose can justify it.⁴

The “Purpose to Cause Harm” Standard

Writing for the majority, Justice David Souter reached back to Rochin v. California (1952) and its rule that executive conduct violates substantive due process when it “shocks the conscience.” The harder question was what kind of officer behavior actually shocks the conscience during a car chase. The Court’s answer: only conduct driven by “a purpose to cause harm unrelated to the legitimate object of arrest.”¹

That is the highest bar in due process law. It is not negligence. It is not recklessness. It is not even deliberate indifference, which means knowing about a serious risk and disregarding it. A plaintiff has to show the officer intended to injure or kill someone for reasons disconnected from making a lawful arrest. Think of a patrol car used as a weapon against someone who has already surrendered, or a chase continued out of personal hostility after any law enforcement purpose has evaporated.

Applying that test to Deputy Smith, the Court found nothing in the record suggesting he pursued the motorcycle for any reason other than catching a fleeing rider. The chase was dangerous, and the death was tragic, but Smith’s conduct stayed tied to a legitimate law enforcement goal throughout the seventy-five seconds. The Fourteenth Amendment claim failed.⁵

Why the Fourth Amendment Did Not Apply

A police chase might look like an attempted seizure, and the Fourth Amendment protects against unreasonable seizures under an “objective reasonableness” test that is generally easier for plaintiffs to satisfy. But the Court had already held in California v. Hodari D. (1991) that merely chasing someone is not a seizure, and in Brower v. County of Inyo (1989) that a Fourth Amendment seizure requires force intentionally applied to stop the person, such as a roadblock. Smith did not ram Lewis or use any intentional physical force to stop him, so the Fourth Amendment did not cover what happened.¹

The consequence is significant. By ruling the Fourth Amendment inapplicable, the Court funneled pursuit claims that do not involve deliberate physical force into the Fourteenth Amendment, where the burden is far heavier.

Why Chases Get the Toughest Standard

The Court did not apply the purpose-to-harm rule to all due process claims. It built a sliding scale based on how much time an official has to think.

Where officials have time to deliberate, a lower threshold applies. In prisons, for example, the state holds custody over people who cannot care for themselves, and deliberate indifference to a prisoner’s medical needs or safety is enough to shock the conscience under cases like Estelle v. Gamble (1976) and Youngberg v. Romeo (1982).⁵

A high-speed chase is the opposite. Officers face what the Court called “unforeseen circumstances” that “demand an instant judgment” while feeling “the pulls of competing obligations” — the duty to catch a dangerous driver against the risk to bystanders and the suspect. Because forethought is not realistic in those seconds, deliberate indifference is not enough. Nothing short of a malicious motive will do.¹

What This Means for Bystanders and Passengers

Lewis himself was a passenger, not the driver being chased. The ruling has since been extended by lower courts to bystander claims as well. If an innocent pedestrian is hit by a fleeing driver during a pursuit, the same purpose-to-harm standard generally applies to any federal civil rights claim against the pursuing officer. The Court’s time-pressure rationale does not change based on who ends up hurt.⁶

This is where the practical impact hits hardest. Passengers, bystanders, and other third parties all face the same nearly impossible burden of proving an officer intended to cause harm for reasons unrelated to law enforcement. Bad tactical calls, violations of department pursuit policy, and chases continued well past the point of reasonable risk are all insulated from § 1983 liability as long as the officer’s motive stayed connected to making an arrest.

State Tort Claims as the Remaining Path

Lewis controls federal constitutional liability. It does not block state-law claims for negligence or wrongful death against officers and their departments. State tort law typically uses a much lower standard — ordinary negligence, or in some states reckless disregard for safety — instead of the purpose-to-harm rule the Supreme Court imposed for due process claims.

State rules vary widely. Many states have waived sovereign immunity for certain tort claims tied to government employees’ driving, but those waivers usually come with conditions: damages caps, administrative claim requirements before a lawsuit can be filed, and short deadlines that can expire within months of the incident. Some states also grant broader immunity for emergency vehicle operations, requiring proof of something more than ordinary negligence. Anyone considering a lawsuit after a pursuit-related injury needs to check their own state’s immunity statutes and filing deadlines quickly, because missing a notice deadline is one of the most common ways these claims die.

Why the Case Still Controls

Sacramento v. Lewis drew a bright line that pursuit-injury plaintiffs have rarely been able to cross in federal court. By tying the constitutional standard to purpose-to-harm rather than recklessness or deliberate indifference, the Court effectively removed federal civil rights liability from the vast majority of police chase scenarios.¹

The decision also locked in a broader principle about substantive due process: what shocks the conscience is not fixed but scales with circumstances. Officials with time to deliberate are held to a lower threshold; officials acting under extreme time pressure get considerably more latitude. That framework now reaches well beyond police chases to any claim that executive action was so outrageous it violated substantive due process.

1
Supreme Court of the United States. County of Sacramento v Lewis
2
FindLaw. Lewis v Sacramento County
3
Office of the Law Revision Counsel. 42 USC 1983 – Civil Action for Deprivation of Rights
4
Cornell Law School. County of Sacramento v Lewis
5
Justia U.S. Supreme Court Center. County of Sacramento v Lewis
6
LLRMI. Motor Vehicle Pursuit Liability