Apparently criminals can get a hold of gun owner registries, and use them to target residences for theft. This is one thing that’s always kind of annoyed me about our opponents proposals. If you enacted drastic measures to cut down on criminal access to firearms from the primary, legal market (by limiting or frustrating everyone’s access to firearms, like Chicago or D.C.), there would be a greater incentive to engage in theft of firearms to keep the black market supplied. Especially if, as many of our opponents want, the registries were made public information. I don’t see that shifting criminal sources of guns more heavily to theft is a net public good.