[Puppage]

Each and every table at that gun show that was an FFL license had to have each and every sale to an individual checked in a data base of the Federal Government before the gun sale was complete.

Exactly!

It's the same as if they were in the gun store.

[MrB]

conversely,

if they attempted to “close the gunshow loophole”,

they would be outlawing the private sale of property from one individual to another.

That, in itself, is so not Constitutional.