Actually I think most legislation address’ private sales, period. They simply peddle it as “gun shows”. Wouldn’t end private sales, for example you’d simply have to go to the time and expense of running a “sale” through a dealer when transfering a firearm to a family member. A dealer in the proper state if a handgun.
That would easily add some 10% to the price, as dealer transfers usually run somewhere around $30 - and that just to sell a personally-owned item to a family member? WTF?
True, but once they can end private sales ( if you need a dealer it’s nolonger private) They can work on regulations to put the dealers out of business.