A federal regulator on the Federal Communications Commission has weighed in on e-cigarettes, proposing significant federal overreach.

E-cigarettes are the public-health crisis du jour, and FCC Commissioner Jessica Rosenworcel has vowed to take action by banishing e-cigarette advertising from radio and television airwaves. Yet by leveling the marketing playing field between cigarettes and e-cigarettes, the proposed ban not only represents agency overreach, it will likely hurt public health.