Can I just make one comment?
There is always a question and I think a difficulty in attribution of results. It's to show how registering a gun results in fewer deaths. There are probably many factors that do that. I don't know the study you're referring to, but I would be curious to see whether they actually can make that link between a gun registry and a reduction in deaths. It would seem to me that attribution is probably not as direct as some people might want.