Police can use evidence seized during a traffic stop even if it turns out the officers initially pulled a car over based on a misunderstanding of the law, the Supreme Court ruled Monday. The 8-1 decision written by Chief Justice John Roberts said that such a stop does not violate the Constitution’s protection against unreasonable searches. The ruling came in a North Carolina case in which a police officer pulled over Nicholas Heien’s car because the right brake light was out, although the left one still worked. A consensual search led to the discovery of cocaine in the trunk. A...