Often it is constructive to pause , review, and reflect upon the "commerce clause" the over-worked source of federal mischief.
Article I, section 8
under the powers delegated to Congress by THE PEOPLE
To regulate commerce with foreign nations, the several states, the Indian tribes.
This power to regulate commerce was delegated to the U.S. Congress in order that commercial transactions occuring between The United States, foreign nations, the several states, and Indian tribes would be uniformly regulated.
This "commerce clause" does NOT delegate any power to the U.S. Congress to regulate the internal commercial POLICIES OF foreign nations, the several states, or the Indian tribes.
The U.S. Congress may only establish regulations affecting the actual commercial INTERCOURSE occuring BETWEEN the federal government of these United States AND foreign nations, the several states, and the Indian tribes. This power to regulate is tansactional specific, and does not extend into the realm of regulating the respective commercial codes of foreign nations, the several states, or the Indian tribes.
A reasonably fair analogy is the power of Congress to establish post offices. The fact that the mailman goes door to door to your home and mine in order to affect the transaction of delivering our mail to our mailbox - does not permit him to enter our home, take a bath, shave and recline in our recliner. The federal government has no authority to regulate my disposition of my mail - unless I place it inside another stamped envelope and reintroduce it into the USPS system.
My point is that Congress's use of the commerce power has evolved from the "surface-vessle" that it was designed to function as into a "nuclear submarine" that dives deep and has taken up residence in every aspect of our lives.
Congress's power to regulate interstate commerce was exercised when the Glock was originally shipped from the factory in Georgia to the FFL who originally sold it to a customer. The presumptive power to regulate future transactions involving that gun within one of the several states simply does not derive from Article I, Section 8. It derives soley from federal case law holding that once in interstate commerce - forever in interstate commerce.
