[publius911]

And I wouldn't be surprised to see them require some testing and approval of the ingredients. Do you know what chemicals they are putting in your e-vapors? Do you even care?

Yes and yes.
The only "controversial" ingredient involved has been approved for use in foods for many many decades.

[DannyTN]

"The only "controversial" ingredient involved has been approved for use in foods for many many decades."

Actually the German study cited by the FDA, showed that there are many chemicals, different from cigarettes, that are atomized by the e-cigs, whose effect of breathing in atomized form is unknown.