The dems also want to define a Gun Show as simply two people selling a gun between them. Keep that in mind if you support background checks for individuals at gun shows. they want it so that any and all gun transfers go through the system.
And, even if they did set up a booth with a hotline to the Feds...can you imagine the wait for it? And, do you really want to be responsible when the guy you sold your 10/22 to at the show LIED on his 4473, and the NICS didn't catch it....oh shit...that would be fun. And, yes, there would have to be somekind of form filled out. Otherwise, what's to stop everyone from saying they are John Doe, SS# 12345678900? How good are you at detecting false ID's, not to mention detecting motives like straw purchases and such? It wouldn't solve or prevent jack shit.
And, finally, if there was a booth at the gun shows for background checks....like it would be hard to walk outside and meet elsewhere for the trade. Unless my first statement comes to pass, which it would if this 'idea' were to go into law...