Not one word in the Constitution about regulating things that affect commerce but are not commerce at all.
Thing is, if the arguments for a power are so very obvious and an easy sell as people often insist they are why not do things properly rather than just abandon governance by constitutional means?
Because f you things properly, there are left and right limits as to what can be done properly
If you use other means, there are no limits as they can make the rules as they go and be selective in applying them.