No need -- that's the status quo. Witness California legalizing medical marijuana.
A federal amendment, similar in wording to Section 2 of the 21st amendment, is necessary to remove the power from the federal government and return it exclusively to the states.
"And, you realize you have most probably lined yourself up with very wealthy drug dealers, don't you, attitude wise?"
And you're lining yourself up with drug addicts. What's your point?
By simply removing the scheduling system, and obeying the intent of the constitution, the regulation of drugs, a local issue, devolves to the states.
And you're lining yourself up with drug addicts. What's your point?
A syllogism:
Drug dealers enjoy much profit from the artificially high price of drugs.
The artificially high price of drugs are because they are illegal.
Any drug dealer with enough sense to breathe will want to keep them illegal, or their lifestyle is over.
Therefore, they use some of that immense wealth to lobby to keep drugs illegal.
Have a nice day.