Shea blogged here about State v. Heien, the case in which the court of appeals ruled that having one burned-out brake light was not a violation of G.S. 20-129 and so did not support a vehicle stop. (The stop led to a consent search of the defendant’s vehicle, which led to the discovery of drugs and to drug trafficking charges.) The prosecution sought review in the state supreme court. That court assumed that the court of appeals was correct about the scope of the statute but determined (1) that an officer might reasonably think otherwise, given ambiguities in the statute, and (2) that reasonable suspicion may be based on a reasonable mistake of law. Conclusion (2) was the subject of a split of authority across the country, so the United States Supreme Court agreed to review the case. It issued its opinion yesterday.