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No, it is not relevant to the various venues of civil action against the regulating regime. This kind of thing happens and has happened many times.
The alternative, simply rolling over and taking it because rich and powerful people might try to stop you ... would be practically unethical for a product like ecigs which has very little intrinsic harm (but really has almost staggering lifesaving potential).
If you don't think Taxation is an Important Factor in the Actions of the FDA, well, then I think you are Taking a Very Simplest Approach to Nicotine e-liquids.
It would be Nice if we All lived in a Happy Magical Land where something like e-Cigarettes were Judged on their "lifesaving potential".
But we don't. We live in a Country where Tobacco Products are seen as Tax Vehicles.
You can Name a Nicotine e-liquid Anything you want. And you can Make a Nicotine e-liquid from Anything you want like Truck Loads of Eggplant. But the Long and the Short of it is that the FDA is Going to Regulate it.
And the Sate and Federal Government is going to Tax it.
If it makes you Sleep Better at Night thinking that it Isn't going to happen because e-Cigarettes have "very little intrinsic harm", more Power to You.
BTW - What are these "various venues of civil action against the regulating regime"? I'm sure we would All like to hear about them.