These two tweets caught my attention:

As far as I know, ATF is the agency in charge on Firearms Tracing, specially in states that do not have firearms registration. California’s registration is at best incomplete to non-existent depending on what law came to be what year and I am sure ATF is not going to open their database unless they feel they need to have a congressional probe up their asses. So I can’t figure out what database they are using unless the state gave them the incomplete crap they have.

This would not be another case of the Brady Campaign making promises somebody else ends up paying for, would it?