SCOTUS ought to invalidate the DEA and drug scheduling considering they’re overturning other perceived federal overreaches.
(This is also why federal drug legalization could, in theory, be achieved through executive order, if Dems had the spine for that.)
https://en.wikipedia.org/wiki/Wickard_v._Filburn
Basically, if they can somehow connect it to interstate commerce - even if it very indirect, like in this case where growing something for personal consumption affected demand - it's "constitutional", supposedly.
This is the case that explicitly extended this reasoning to drugs:
https://news.gallup.com/poll/356939/support-legal-marijuana-...