What a silly argument for ignoring the Constitution. I could just as well bring up the old argument of the leftists who say that semi and full auto guns didn't exist at the time of the Contitution's signing, therefore the government can exercise full power over their existence/banning.
Your argument boils down to "If the Constitution doesn't specifically mention it, then the federal government has power over it." - which is completely at odds with the text of the Constitution itself which specifically enumerates the few powers it is limited to.
No that is your argument, I was just pointing that out to you.