The court of appeals reversed a defendant’s DWI conviction yesterday in State v. Ashworth, __ N.C. App. __ (August 2, 2016), on the basis that the trial court plainly erred in holding that the driver’s license checkpoint at which the defendant was stopped was appropriately tailored and advanced the public interest. Unlike some checkpoint cases in which you can see the trouble coming in the recitation of facts, Ashworth is a pretty routine checkpoint case. Two officers with the State Highway Patrol set up the checkpoint to look for driver’s license and other traffic violations. The highway patrol had a checkpoint policy that the officers followed. A supervisor approved the checkpoint. The defendant admitted that he had been drinking almost immediately after he stopped at the checkpoint. So where did the trial court go wrong?