Why if somebody has an illegal gun, would they let police search their home?
This is the same non-logic politicians use to assume criminals will abide by gun-control laws. In this case, the cops may use someone’s refusal to give permission for a warrentless search as grounds to obtain a search warrant from a pliant judge. The cops already do this with cars.
Sounds to me that it is a policy aimed at parents afraid of their kids, perhaps even held hostage by them. If that is the case, it will backfire, no pun intended. Better for the parent to drop a dime on their little angel and let him be arrested than to make junior replace his arsenal but now be po’ed at mommy. Typical liberal focus, though - the gun is bad, not its owner.
I suspect the notion is that the Mother's and Grandmothers who the gang bangers sponge off of would allow the search, and thus the police would be able to confiscate the guns... of course they wouldn't tell Granny that she or the little darlins,, or both, would be going to jail if they found illegal weapons.