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Today the Supreme Court granted cert in Rodriguez v. United States, a case on the duration of traffic stops. Heres the Question Presented from the cert petition:

This Court has held that, during an otherwise lawful traffic stop, asking a driver to exit a vehicle, conducting a drug sniff with a trained canine, or asking a few off-topic questions are de minimis intrusions on personal liberty that do not require reasonable suspicion of criminal activity in order to comport with the Fourth Amendment. This case poses the question of whether the same rule applies after the conclusion of the traffic stop, so that an officer may extend the already-completed stop for a canine sniff without reasonable suspicion or other lawful justification.

I wrote a post on Rodriguez back in February that Ill reprint below in light of the grant:

Imagine a police officer pulls over a car for a routine traffic violation, such as speeding or driving with a broken taillight. During the stop, the officer develops a hunch that there may be drugs in the car. He contacts a local K-9 unit and requests a trained drug-sniffing dog; when the unit arrives, another officer will walk the dog around the car to see if it alerts to drugs inside. Although the Supreme Court has held that the use of the dog is not a search, the length of a warrantless stop must be reasonable. The officer cant delay the driver forever.

This raises a question of Fourth Amendment law that has led to a lot of lower court litigation: If the officer has no reasonable suspicion that drugs are in the car that is, he only has a hunch how long can the traffic stop be delayed before the dog arrives and checks out the car?

This might seem like a really technical question. But its actually pretty important. If courts say that the police cant extend the stop even one second to bring over the dogs, then the dogs will only be used when they happen to be right there or some reasonable suspicion exists specifically justifying their use. On the other hand, if the courts say that the police can extend the stop for a long time, then the police will be free to bring out the dogs at routine traffic stops whenever they like.

Lower courts have generally answered the question by adopting a de minimis doctrine. Officers can extend the stop and wait for the dogs for a de minimis amount of time. But exactly how long is that?

Just yesterday, the U.S. Court of Appeals for the Eighth Circuit held in United States v. Rodriguez that seven to eight minutes is de minimis. On the other hand, the Supreme Court of Nevada held a few months ago in State v. Beckman that nine minutes is too long.

These are just lower-court decisions, of course, and there is room to argue that duration alone isnt the only criteria for whether a stop was too long.

Plus, the Supreme Court has been reluctant to announce arbitrary-sounding time limits on Fourth Amendment searches and seizures. Off the top of my head, the only time it has suggested such limits is County of Riverside v. McLaughlin, and even then it did so only because an earlier decision that did not suggest a specific time limit had caused significant chaos in the lower courts in that specific context.

Read the original here:
Volokh Conspiracy: Supreme Court takes case on duration of traffic stops