Au contraire(and I don't agree with this reasoning), Congress granted itself this regulatory power because "if it's grown, harvested, sold, and consumed/used al

Au contraire(and I don't agree with this reasoning), Congress granted itself this regulatory power because "if it's grown, harvested, sold, and consumed/used all in the same state", that affects other state commerce (since demand would be affected by the lack of import of product), and thus can be regulated via the commerce clause.