That would be sensible. But you can’t stop the trafficking in a scenario like that. You just can’t.
When I was growing up, drug dealing, in my peer group, was a gentleman’s game. It was all very casual. We knew there was violence and smuggling some where along the line, but we never saw any of that. Get involved with blacks dealing dope though, and the knives and guns came out immediately.
You’ll stop demand for foreign marijuana overnight, and give people the right to grow a plant. It can’t more simple than that. Enforce the laws on the books against selling and transport same as now but the demand will be dramatically less.