You can't.
Those are just typical Obama exaggerations and outright lies to justify making background checks mandatory for person to person sales.
Person to person sales are the democrat invented "Gun Show Loophole" that drives liberals into apoplectic fits.
The thought of citizens being free to make private deals or to do pretty much anything else without government control is just too much for them to live with.
It’s going to be much, much more than that. Every gun purchase will require proof that you aren’t going to resale the gun. They’ll have to know the inventory of every gun owner to enforce compliance. That’s going to be expensive and invasive.
Please you live in Florida and believe that.
O should have used the term "unlicensed dealer" which would be more correct. The way the federal law reads it's very hard to prove that an individual isn't buying and selling to "enhance" their gun collection. As a Life member of the NRA its hard to defend this administration's crap but private sales usually avoid the NICS check, at least here in Florida.