I can deal with that. Trouble is in a nation where power has increasingly become centralized, regulation and control of dangerous substances easily grown and transported such as pot need sanctions at the federal level...
But what about that pesky Tenth Amendment? It forbids the Federal government from doing anything not specifically authorized in Article 1, Section 8 or by amendment. As an example, alcohol prohibition required a specific amendment to give the Feds authority. They understood at the time that, absent the 18th amendment, they had no such authority.
Have you found the amendment that authorized any other substances to be prohibited? I have never found it. And, since FReepers respect the constitution, then they should be vehemently against Federal drug prohibition. Right, of course right!