Derp Derp Derp.
see that thing way over there ------->
thats the point of the story.
<-------- see that spot WAY over there? thats where you are, its called irrelevance.
but by all means tell us how "Private Dealers/Gunshows" would make a bit of difference. any transfer of a firearm by any person without filing the ATF "request to transfer a gun" form is a federal crime. even if that transfer is done by a "private dealer" (protip: if you are a Dealer you muist be licensed anywhere in the US, and fill out the ATF form for every gun.) a private seller, or at a gun show.
the form ALWAYS gets filled out, and he would be denied no matter who he was dealing with.
what you probably meant was a Black Market Gun Dealer (like the Obama Administration) but you foolishy equate persons selling 1 or 2 guns privately and traveling gun shows with the illegal arms trade. but thats stupid.
One caveat: This only applies to NEW guns. Used guns can be purchased at a gun show and there is no requirement for a background check or any type of ATF form to be filled out.