(Reuters) – The U.S.  proposed rules on Thursday that would ban the sale of e-cigarettes to anyone under 18, but would not restrict flavored products, online sales or advertising, which public health advocates say attract children. The long-awaited proposal, which would subject the $2 billion industry to federal regulation for the first time, is not as restrictive as some companies had feared and will likely take years to become fully effective. Bonnie Herzog, an analyst […]