If den Beste could amend the Constitution,

here's what he'd do. Including

1. An Interstate Commercial Transaction as referred to in Article I, Section 8, only exists when the buyer and seller are residents of different states, and the buyer gives money to the seller in exchange for products and/or services which are delivered from one state to another. Congress has no power to regulate commercial transactions which take place within a state between residents of that state, and the Commerce Clause of Article I, Section 8, shall not be construed to grant Congress power to regulate anything which is not commerce.
2. Because it is important for America citizens who are not members of the Armed Forces to be able to protect themselves, their families, their property, their fellow citizens, and the nation as a whole, the right of private citizens over 18 years of age who are not convicted felons to purchase, possess, and carry firearms and ammunition shall not be infringed by federal, state, or local law.