USA Today, February 7, 2015
“Five states have passed laws that forbid cities approving stricter ordinances, according to a January report in the medical journal Tobacco Control. That could stifle community action around e-cigarettes, says Mark Pertschuk, director of Grassroots Change, a network of public health movements. He notes that most clean-air laws began as local ordinances before gaining enough traction to be passed statewide.”