And what part of the Constitution grants FedGov the power to ban a plant? It required a Constitutional amendment for them to try to get rid of ethanol, so what’s so different here that the Constitution already covers it?
The Constitution now says whatever 5 out of 9 Supreme Court Justices want it to say.
It began in 1942, when the Supreme Court decreed in Wickard v. Filburn that the federal government can prohibit a farmer from growing wheat for consumption by his own family under the Interstate Commerce Clause. The Supreme Court doubled down in Gonzales v. Raich in 2005 and decreed that the federal government can prohibit the possession and use of marijuana even if you grow it yourself for medicinal use.