Montgomery v. Caribe Transport II, LLC is a U.S. Supreme Court case that addresses whether freight brokers can be held liable under state negligence laws for the selection of motor carriers. The case centers on how federal transportation law, specifically the FAAAA, applies when a broker’s carrier selection is alleged to have contributed to a trucking accident. It ultimately examines the balance between federal preemption and states’ ability to enforce safety-related laws involving motor vehicle operations.