Adding another globally common and less regulated substance to the list of extrajudicial desireables simply equals a performance bonus and being low aquisition risk (already shipping other goods from places that grow tobacco and make cigs) as an incentive for the already very profitable and active operators of these networks.

From my perspective this would simply make being a smuggler easier and more profitable and be a value uplift for corrupt enforcement and a net reduction in collectable taxes... moving the revenue from comsumption tax books to black market coffers.