In other words, this is a special exemption put in place for what are clearly political, rather than public health purposes.

First, the advocates want e-cigarettes to be taxed, and it would be easier to tax these products if they are defined as tobacco products. It's hard to turn down a revenue stream when you see one, and "anti-smoking" advocates are apparently no different. They see a nicotine-containing product that some people are using for pleasure, and they immediately want to tax it, regardless of the fact that taxing e-cigarettes will increase cigarette use and kill people by removing the economic incentive for smokers to switch from real cigarettes to e-cigarettes.

And what might those political purposes be?

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