A group of convenience-store and restaurant trade groups have filed a lawsuit to stop New York City from enforcing a municipal regulation requiring calorie and nutrition information to be posted in their establishments. Nat’l Assoc. of Convenience Stores v. New York City Dep’t of Hygiene, No. 17-5324 (S.D.N.Y., filed July 14, 2017). In 2010, the Patient Protection and Affordable Care Act (ACA) imposed new menu-labeling requirements, and the U.S. Food and Drug Administration (FDA) issued its final implementation rule for those requirements in 2014. FDA extended the compliance date for the federal rule to May 7, 2018, but on May 18, New York City Mayor Bill de Blasio announced that enforcement of the parallel city regulation will nonetheless begin on August 21, 2017. Claiming that the city regulation is preempted by the ACA, the plaintiffs seek preliminary and permanent injunctions against enforcement and a declaration that the city regulation is preempted by federal law. Additional details appear in Issues 597603 and 633 of this Update.