Please abandon one misconception that is being repeated here:
The FDA does not now and never has had jurisdiction over tobacco products. It might be given that authority later this year, but Congress must first approve it and the President must sign a bill that has already passed the House and will be taken up soon in the Senate. Right now, the FDA does NOT regulate tobacco and didn't help hook any addict on nicotine.
The FDA is responsible for the safety and efficacy of drugs and foods. E-liquid is a drug. It is not tobacco. It is not a tobacco product outside FDA jurisdiction. The job of FDA is protect everyone in this country from the marketing of dangerous or hazardous drugs. It's not your "freedom of choice" being challenged. It's the fact that to market a new drug (which the mixed e-liquid is), an approval is needed. And the makers of e-liquid didn't get that approval. None of us know what exactly we're inhaling -- or the consequences of our action. Matters of this magnitude go way beyond "I like it, I want it."
Now, the FDA must consider whether to allow this new drug (unregulated, with terribly inadequate packaging and no guarantee of contents or quality) to continue to be sold or to call a halt to sales while assurances of safety are studied.
This one is easy, unfortunately, and every civilized country in the world is traveling the same route. These cannot be allowed to continue on the market without greater assurances than "faith" in some Chinese unknown liquid.
You want approval? Then hope responsible makers like Ruyan can win proper certifications. Without it, kiss today's practice goodbye.