AFAIK, never.
It has nothing to do with the commerce clause or any interpretation of it.
I sure does. The same New Deal Commerce Clause that allows this regulation also allows fedgov to regulate health care, education and the environment.
Now that you've been informed, I'll ask again. Do you support the New Deal view of the Commerce Clause sometimes?
Edit - ‘I sure does’ should read ‘It sure does’
Sorry, but you are wrong.