United States v. Arvizu

534 U.S. 266 (2002)

Facts

Agent Stoddard was working at a border patrol checkpoint along U. S. Highway 191 approximately 30 miles north of Douglas, Arizona. When the checkpoint is operational, border patrol agents stop the traffic on 191 as part of a coordinated effort to stem the flow of illegal immigration and smuggling across the international border. Agents use roving patrols to apprehend smugglers trying to circumvent the checkpoint by taking the backroads, including those roads through the sparsely populated area between Douglas and the national forest. Magnetic sensors, or 'intrusion devices,' facilitate agents' efforts in patrolling these areas. Directionally sensitive, the sensors signal the passage of traffic that would be consistent with smuggling activities. Smugglers commonly try to avoid the 191 checkpoint by heading west on Rucker Canyon Road from Leslie Canyon Road and thence to Kuykendall Cutoff Road, a primitive dirt road that leads north approximately 12 miles east of 191. Around 2:15 p.m., Stoddard received a report via Douglas radio that a Leslie Canyon Road sensor had triggered. This was significant to Stoddard for two reasons. First, it suggested to him that a vehicle might be trying to circumvent the checkpoint. Second, the timing coincided with the point when agents begin heading back to the checkpoint for a shift change, which leaves the area unpatrolled. Stoddard knew that alien smugglers did extensive scouting and seemed to be most active when agents were en route back to the checkpoint. Another border patrol agent told Stoddard that the same sensor had gone off several weeks before and that he had apprehended a minivan using the same route and witnessed the occupants throwing bundles of marijuana out the door. As Stoddard went to investigate he received another radio report of sensor activity. It indicated that the vehicle that had triggered the first sensor was heading westbound on Rucker Canyon Road. He pulled off to the side of the road at a slight slant so he could get a good look at the oncoming vehicle as it passed by. A minivan, a type of automobile that Stoddard knew smugglers used approached and slowed dramatically, from about 50-55 to 25-30 miles per hour. He saw five occupants inside. An adult man was driving, an adult woman sat in the front passenger seat, and three children were in the back. The driver appeared stiff and his posture very rigid. He did not look at Stoddard and seemed to be trying to pretend that Stoddard was not there. Stoddard thought this suspicious because in his experience on patrol most persons look over and see what is going on, and in that area, most drivers give border patrol agents a friendly wave. Stoddard noticed that the knees of the two children sitting in the very back seat were unusually high as if their feet were propped up on some cargo on the floor. Stoddard decided to get a closer look, so he began to follow the vehicle. Shortly thereafter, all of the children, though still facing forward, put their hands up at the same time and began to wave at Stoddard in an abnormal pattern. It looked to Stoddard as if the children were being instructed. Their odd waving continued on and off for about four to five minutes. Several hundred feet before the Kuykendall Cutoff Road intersection, the driver signaled that he would turn. At one point, the driver turned the signal off, but just as he approached the intersection, he put it back on and abruptly turned north onto Kuykendall. The turn was significant to Stoddard because it was made at the last place that would have allowed the minivan to avoid the checkpoint. Stoddard radioed for a registration check and learned that the minivan was registered to an address in Douglas that was four blocks north of the border in an area notorious for alien and narcotics smuggling. After receiving the information, Stoddard decided to make a vehicle stop. He approached the driver and learned that his name was Ralph Arvizu (D). Stoddard asked if D would mind if he looked inside and searched the vehicle. D agreed, and Stoddard discovered marijuana in a black duffel bag under the feet of the two children in the back seat. Another bag containing marijuana was behind the rear seat. In all, the van contained 128.85 pounds of marijuana, worth an estimated $99,080. D was charged with possession with intent to distribute marijuana. D moved to suppress the marijuana, arguing among other things that Stoddard did not have reasonable suspicion to stop the vehicle as required by the Fourth Amendment. The District Court for the District of Arizona disagreed. The Court of Appeals for the Ninth Circuit reversed. In its view, fact-specific weighing of circumstances or other multifactor tests introduced 'a troubling degree of uncertainty and unpredictability' into the Fourth Amendment analysis. After characterizing the District Court's analysis as relying on a list of 10 factors, the Court of Appeals proceeded to examine each in turn. It held that 7 of the factors, including respondent's slowing down, his failure to acknowledge Stoddard, the raised position of the children's knees, and their odd waving carried little or no weight in the reasonable-suspicion calculus. The remaining factors--the road's use by smugglers, the temporal proximity between respondent's trip and the agents' shift change, and the use of minivans by smugglers--were not enough to render the stop permissible.