I do not support a gun registry and certainly not confiscation unless it's court-ordered and can be appealed or reversed. However, I still do not want non-FFL people selling guns without a BC at gun shows. I think the law should require any vendor at a gun show to be an FFL dealer, no license = no selling inside the gun show. And I'd probably have a couple of cops or armed security guards outside the show to prevent purchases there.
IMHO, we should be looking at ways to keep guns out of the hands or anyone who can't pass a BC without infringing on the 2nd Amendment rights of the rest of us.