Didn't the "PACT" act just make it illegal to ship tobacco? Assuming Njoy wins their case, how long do you think it will take the zealots to have it amended it to include e-cig parts and/or juice? PACT was ostensibly to "protect the children", and that's a major scare tactic against e-cigs.
Also, if Njoy wins, you can bet the farm that juices will be regulated so heavily, you'll have to be a full blown multi-million dollar lab to produce them for sale. Not to mention when BT gets through buying politicians, all that will be available is 10mg prefilled cartos with $1/each tax on them. Unflavored and sealed, of course, to prevent tampering (refilling). BT isn't going to allow menthol analogs to be banned while ecigs have all those flavors to choose from.
There is no way in the world I'd invest in an ecig business. It will be squashed in it's infancy by BT and BP, just like they squashed the RYO/MYO industry. For now, pipe tobacco is being used as a workaround, but they're eyeing that for a 2000% tax hike and inclusion in "PACT" will be not far behind. Don't forget, the Citizens United case has granted BT and BP the legal right to buy all the politicians they can afford now. And they can afford a lot more of them than the puny e-cig industry.
Stock up on atty's and nic juice. Learn to rebuild attys. Plan on hooking into the nic juice black market when your supply runs out if you want to keep on vaping anything with nic. in it.