The growers and processors are not the problem. U.S. citizens, without a doubt the number one consumers of illegal drugs, are not the problem. The reasons people choose to use and abuse drugs are the problems. This is a huge waste of tax dollars that could be better spent on addressing the issues that lead people on a path of addiction. Prohibition did not work in the early part of the 19th century.
Criminalization is a joke.
The prisons are full drug dealers and abusers and cannot be built fast enough to house the convicted.