Also known as: individualized suspicions · particularized suspicion
Written by attorneys — see sources below.
A Fourth Amendment requirement that law enforcement possess particularized suspicion directed at a specific individual before conducting most searches or seizures. The standard ensures that intrusions rest on an objective basis tied to the person rather than on general or random selection. It yields in limited contexts where special needs beyond ordinary law enforcement justify suspicionless action.
During a lawful traffic stop for a broken taillight, Officer Ramirez orders passenger Imani Idowu to step out of the car. The officer has no information suggesting Imani is armed or dangerous. The order is upheld because officer safety permits removal of passengers without individualized suspicion.
Officer Patel stops Ismael Ibrahim after observing him fail to signal a lane change. The officer's true goal is to investigate possible drug activity, yet the stop rests on the observed traffic violation. The stop is valid because probable cause of the infraction supplies the necessary individualized suspicion.
On the evening of June 10, 1993, plainclothes vice-squad officers of the District of Columbia Metropolitan Police Department were patrolling a high drug area of the city in an unmarked car. Their suspicions were aroused when they passed a dark Pathfinder truck with temporary license plates and youthful occupants waiting at a stop sign. The driver was looking down into the lap of the passenger at his right. The truck remained stopped at the intersection for more than 20 seconds. When the police car executed a U-turn to head back toward the truck, the Pathfinder turned suddenly to its right without signaling and sped off at an unreasonable speed. The policemen followed and overtook the Pathfinder when it stopped behind other traffic at a red light. Officer Ephraim Soto stepped out and approached the driver’s door, identifying himself as a police officer and directing the driver, petitioner Brown, to put the vehicle in park. When Soto drew up to the driver’s window, he immediately observed two large plastic bags of what appeared to be crack cocaine in petitioner Whren’s hands. Petitioners were arrested, and quantities of several types of illegal drugs were retrieved from the vehicle. Petitioners were charged in a four-count indictment with violating federal drug laws, including 21 U.S.C. §§ 844(a) and 860(a). At a pretrial suppression hearing, they challenged the legality of the stop and the resulting seizure of the drugs. They argued that the stop had not been justified by probable cause or reasonable suspicion of illegal drug-dealing activity and that Officer Soto’s asserted ground for approaching the vehicle was pretextual. The District Court denied the suppression motion. Petitioners were convicted of the counts at issue. The Court of Appeals affirmed the convictions. The Supreme Court granted certiorari.
View caseVernonia High School requires all student athletes, including Idina Iverson, to submit to random urinalysis. No coach or administrator has observed signs of drug use by Idina. The policy is upheld because the special need to deter drug use in athletics permits testing without individualized suspicion.
Vernonia School District 47J operates one high school and three grade schools in the logging community of Vernonia, Oregon. In the mid-to-late 1980s, teachers and administrators observed a sharp increase in drug use among students. Between 1988 and 1989 the number of disciplinary referrals in Vernonia schools rose to more than twice the number reported in the early 1980's. A Vernonia high school football coach had observed suspicious steroid use by his athletes. The District's wrestling coach had witnessed students sharing steroids and had discovered steroids in a school locker. The District had a drug testing policy for student athletes since before 1989, but it had not been enforced for lack of funding. In the fall of 1989, the District received funds for a drug testing program and approved a Student Athlete Drug Policy. The Policy authorized random urinalysis drug testing of students who participated in the District's athletic programs. The Policy applied to all students participating in interscholastic athletics. It required students and their parents to sign a consent form agreeing to drug testing as a condition of participation. Athletes were tested at the beginning of the season and then randomly throughout the season. The testing procedure required students to provide a urine sample in a bathroom stall with an adult monitor of the same sex standing outside the stall. The monitor listened for normal sounds of urination. The samples were sent to a laboratory for analysis. A positive test result led to a meeting with the student and his or her parents. The student was given the option of participating in a drug assistance program or being suspended from athletics for the remainder of the season and the next season. In the fall of 1991, respondent James Acton, who was then a seventh grader, signed up to play football at the District's middle school. He was denied participation because he and his parents refused to sign the consent form for drug testing. They then filed this suit in the United States District Court for the District of Oregon, seeking declaratory and injunctive relief from enforcement of the Policy on the grounds that it violated the Fourth and Fourteenth Amendments to the United States Constitution and Article I, § 9, of the Oregon Constitution. After a bench trial, the District Court dismissed the suit on the merits. A panel of the Court of Appeals for the Ninth Circuit reversed, holding that the Policy violated both the Federal and the State Constitutions. The Supreme Court granted certiorari.
View caseAfter a derailment, regulators order engineer Ira Irving to undergo immediate drug and alcohol testing. No evidence points to impairment by Ira specifically. The testing is constitutional because the special need to ensure railroad safety justifies the requirement absent individualized suspicion.
The Federal Railroad Safety Act of 1970 authorizes the Secretary of Transportation to prescribe rules for railroad safety. For many years, railroads have enforced Rule G prohibiting operating employees from possessing alcohol or being intoxicated while on duty. In July 1983, the Federal Railroad Administration expressed concern that these efforts were inadequate after identifying at least 21 significant train accidents from 1972 to 1983 involving alcohol or drug use as a probable cause or contributing factor. After soliciting comments and announcing its intention in June 1984, the FRA promulgated regulations in 1985. Subpart C mandates that railroads transport covered employees to medical facilities for blood and urine testing after major train accidents, impact accidents, or incidents involving a fatality to an on-duty employee. Subpart D authorizes railroads to require breath or urine tests after reportable accidents where a supervisor has reasonable suspicion or upon specified rule violations. The Railway Labor Executives' Association and member labor organizations sued in the Northern District of California seeking to enjoin the regulations. The district court granted summary judgment to the Secretary of Transportation and the FRA. A divided panel of the Ninth Circuit reversed. The Supreme Court granted certiorari.
View caseOfficers executing a search warrant at a tavern pat down every customer, including Ingrid Innes, without any facts suggesting she possesses contraband. The search of Ingrid is invalid because the warrant supplies no individualized suspicion as to her.
On March 1, 1976, a special agent of the Illinois Bureau of Investigation presented a complaint for a search warrant to an Illinois circuit court judge. The complaint recited that a reliable informant had observed fifteen to twenty-five tin-foil packets on the person of the bartender Greg and behind the bar at the Aurora Tap Tavern over the weekend of February 28 and 29. The informant had seen such packets on Greg and in a drawer on at least ten other occasions. The informant had been told by Greg that he would have heroin for sale on March 1. On the strength of this complaint the judge issued a warrant authorizing the search of the Aurora Tap Tavern and the person of Greg the bartender for heroin, contraband, other controlled substances, money, instrumentalities, and narcotics paraphernalia. In the late afternoon of March 1, 1976, seven or eight officers proceeded to the tavern. Upon entering they announced their purpose and advised all those present that they were going to conduct a cursory search for weapons. One officer then patted down each of the nine to thirteen customers present while the remaining officers searched the premises. The officer who frisked the patrons found Ventura Ybarra standing by a pinball machine. In the first patdown the officer felt a cigarette pack with objects in it but did not remove it. After completing the process the officer returned to Ybarra two to ten minutes later, relocated and retrieved the pack from Ybarra's pants pocket, and found six tinfoil packets containing a brown powdery substance that later proved to be heroin. Ybarra was subsequently indicted by an Illinois grand jury for the unlawful possession of a controlled substance. He filed a pretrial motion to suppress the contraband seized from his person. At the suppression hearing the State sought to justify the search by reference to an Illinois statute authorizing officers to detain and search persons found on premises being searched pursuant to a warrant. The trial court denied the motion, finding that the search had been conducted under the authority of the statute to prevent the disposal or concealment of things described in the warrant. The case proceeded to a bench trial and Ybarra was found guilty. On appeal the Illinois Appellate Court affirmed the conviction, holding that the statute was not unconstitutional in its application to the facts of the case because the search occurred in a one-room bar where heroin was being sold, the packets could easily have been concealed, and Ybarra was not an innocent stranger having no connection with the premises. The Illinois Supreme Court denied Ybarra's petition for leave to appeal. There followed an appeal to the United States Supreme Court, which noted probable jurisdiction.
View caseState police stop every fifth vehicle at a nighttime checkpoint, including the car driven by Ian Iverson. Officers have no particularized information about Ian. The stop is upheld because the special need to remove drunk drivers from the road permits brief seizures without individualized suspicion.
In early 1986 the Michigan Department of State Police established a sobriety checkpoint pilot program after its director appointed an advisory committee that included representatives of the State Police, local police departments, state prosecutors, and the University of Michigan Transportation Research Institute. The committee developed written guidelines that required checkpoints to be selected pursuant to written procedures, operated by uniformed officers under the supervision of a field commander, with every vehicle stopped, occupants briefly questioned, and the vehicle visually inspected; only drivers showing signs of intoxication would be directed out of the traffic flow for further investigation. The first and only checkpoint operated under the program ran for seventy-five minutes on the northbound lane of I-75 in Saginaw County on May 2, 1986. During that operation 126 vehicles passed through the checkpoint, the average delay per vehicle was approximately twenty-five seconds, two drivers were arrested for driving under the influence of alcohol, and one driver was arrested for driving with a suspended license. Respondents are two licensed Michigan drivers who regularly travel the state and who were stopped at the checkpoint but not arrested. On the day before the Saginaw County checkpoint they filed a complaint in the Circuit Court of Wayne County seeking declaratory and injunctive relief against the checkpoint program. After trial the Wayne County Circuit Court ruled that the program violated the Fourth Amendment and the Michigan Constitution. The Michigan Court of Appeals affirmed the Fourth Amendment holding, the Michigan Supreme Court denied leave to appeal, and the United States Supreme Court granted certiorari.
View caseThe government may dispense with individualized suspicion when special needs beyond ordinary law enforcement, such as public safety or border control, justify the program and the intrusion is limited. Examples include sobriety checkpoints, certain drug-testing regimes for safety-sensitive employees, and fixed immigration checkpoints near the border.
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A traffic violation supplies the individualized suspicion needed for the stop itself. Officers may not, however, extend the stop beyond the time required to address the violation without additional suspicion or consent.
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The testing served a special need to protect public safety after accidents rather than to gather evidence for ordinary criminal prosecution. The regulations narrowly defined the circumstances and limited the privacy intrusion.
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Checkpoints are permissible when their primary purpose is roadway safety or border control rather than general crime detection. Drug-interdiction checkpoints fail this test because their dominant purpose is ordinary law enforcement.
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…legal technicians, act.' Id. , at 175. Our observation in United States v. Cortez , 449 U. S. 411, 418 (1981), regarding "particularized suspicion," is also applicable to the probable-cause standard: "The process does not deal with hard certainties, but with probabilities. Long before the law of probabilities was articulated as…