All sales should go through licensed dealers

It is illegal to operate a firearm business without a Federal Firearms License.
It is illegal for a convicted felon to buy a firearm.
It is illegal to knowingly sell a firearm to a convicted felon.
Still, the anti gun forces think that we should pass a law that requires all gun sales to go through a dealer. They claim that the criminals will then be prevented from buying guns, because they won't buy guns on the black market.

There is a couple in San Antonio that bought a girl on the internet, and then forced her into prostitution. We need to institute a law requiring everyone to sell everything through an authorized retail establishment.

That should fix it. Right?