Well, i can only say good luck.
I am mostly following the news from Europe, and it's a nightmare down there. Since May/20 all import or export of ecigarettes (including mods, atomizer, coils and juices) is prohibited. Only thing that remains is flavors (but i can't see how would they prohibit such thing), so we are pretty much screwed up. It remains to be seen how the thing will play out, but at this point, i believe this is the end of the vape shops since most of the stuff comes out of Europe, and nicotine will become history if they put up their effort in it.
That was completely expected tho. While some were fighting to prove that vaping is way less harmfull then the smoking, others were playing with it, abusing and breaking all the rules by using them in places where they shouldn't.
Now noone will use it no more since there won't be any easy way to buy something.
Anyway, good luck with FDA