Medical checkup, ok, maybe not.Medical check? Does that mean disabled or sick people can't pass muster?
Credit check? Does that mean discrimination against low socio-economic status?
Mental health? What's the line for healthy? Mild depression? Moderate? Who gets to decide?
A local registry sure is better than a national registry. That's a slippery slope uphill. That's a step and half away from a national registry. Again, would it be public information?
If I bought a gun from you, who's county that register in? At some point there will have to be a cross-reference.
Absolutely on mental health history, though.
Also yes on a credit history. People who have suddenly recently undertaken severe debt should be considered a risk, contingent on their psychological eval. All these factors play into the yes or no decision. Who decides? Hell if I know. I'm not making policy here. I'm offering ideas that may prove to be completely unfeasible. There's no infrastructure and again, maintaining something at the county or even state level requires legislation and infrastructure to work. I'm not hashing out minutiae, because at this point of spitballing and really wish listing items, I don't need to for this.
If you buy a gun, it registers in the county of the owner. If you sell a gun, it is simply listed as sold in the list (yeah, right, I know that won't happen but in my ideal example, I'm rolling with it). It will take a ton of work to address this. But it could theoretically be done if people cared about someone else's life more than their own convenience.