Accept the inevitable and prepare for it.
Recreational marijuana use is already commonplace.
Legalize it, regulate it, tax it, reap the revenues, pay off the national debt.
Provide initial assistance to the tobacco growers to transition over to produce high quality cannabis for controlled recreational use. Minimal outlay--it's so easy to grow compared to tobacco.
Tobacco is a useless carcinogenic. Allowing tobacco is like allowing the use of asbestos.
We will pay off our national debt, and we'll have nice cigarette packs and cartons of pre-rolled joints available to the consumer, and a lot less stress.