Federal preemption of state law under the authority FIFRA has been debated since long before the last U.S. Supreme Court opinion on the topic, Bates v. Dow, was handed down in 2005. Bates recognized federal preemption of state labeling requirements that diverge from those set in FIFRA and its implementing regulations, whether required by a state legislature or by a court. There is currently a request for the U.S. Supreme Court to review FIFRA’s authority to preempt state labeling requirements and this panel will outline the underlying legal principles of preemption, review the background of Bates and other cases on this topic, and review the arguments currently under consideration for review by the U.S. Supreme Court.