As of June 30, 2019, 32 states have enacted at least one type of preemptive tobacco law related to smoke-free indoor air, local tobacco retail licensing, and/or youth access, according to a new study co-authored by ASPiRE CAB chair Maggie Mahoney. The study, published in Public Health Management & Practice, includes case studies of preemption laws in four states: Hawaii, North Carolina, South Carolina, and Washington.