It appears to me that the only places that have denied them flat out have done so because they have not been approved by the FDA. Does that really not seem reasonable to you? Other than that it's just illegal to sell them to minors or illegal to use them in places you can't smoke. What I really don't understand is the right wing who keeps yelling that the states should decide. Well, they are. And a lot of states that laws against these are solid red. Arkansas, anyone? Utah? Tennessee?