The system is quite effective because there's a reduction of 300 deaths a year. Considering that the measure is that effective, and considering all the costs it represents, it seems reasonable to me that solid, well supported evidence should be provided to demonstrate that the registry is ineffective before making any changes to the system. We know that the act, as it currently stands, makes it possible to effectively reduce the number of firearm-related deaths.
On May 26th, 2010. See this statement in context.