Then perhaps you should find an individual state to legalize marijuana that is ENTIRELY produced within the state (no outside fertilizers, packaging, etc.) and go to court. In that case you MAY have an argument. Or do you believe that the states have no right to make it illegal within the state?
And again, if you had bothered to read my posts on this thread before going off on a “ready-fire-aim” anti-small-government-advocates rant, you would see that the example I used was a backyard grower for personal use. According to Clarence Thomas (that well-known anti-social-conservative libertine, /s), if the feds claim jurisdiction over such a situation using the commerce clause, then there is realistically no limit on federal government power at all. And we know that that is not what the Founders intended.
And yes, while I haven’t read every state Constitution, I would guess that most if not all states have the power to ban drugs.