Lewis v. Vasquez

Issue: (1) Whether the U.S. Court of Appeals for the 10th Circuit, in a divided 2-1 decision, incorrectly narrowed qualified immunity and failed to faithfully apply the Supreme Court's precedents when it held that officers clearly lacked reasonable suspicion for the brief detention of a driver after a valid traffic stop until a drug detection dog arrived and alerted to the driver's car; and (2) whether the 10th Circuit erred by doing precisely what the Supreme Court instructed lower courts not to do in United States v. Arvizu, which was to use a divide-and-conquer approach to reasonable suspicion and proceed to dismiss individual factors as innocuous in isolation rather than consider all factors collectively, i.e., the totality of the circumstances.