Don't let your imagination run away with you. Tobacco was grown on American soil by Indians before Europeans ever landed here. It has been a staple crop for centuries, and it was big business long before we began to think about terrorism. Tobacco is big business. Why would it ever relinquish their profits to aliens (not from outer space)?
Um, ok that is a little bit nuts but who knows they could be. But also they do have tobacco in other places too.
We do not see it because it is it not around us kids. Some people are crazy these days