I am a believer in background checks when a gun is purchased. That is fine with me. I could live with a smaller magazine, if this would prevent mass shootings. That said, this would not have prevented Sandy Hook. The owner of those guns, did not have a handle on her adult kid, and he had access to her guns, and he should not have. I have no concept why she took him shooting, either. This kid had major neurological and mental issues. He was obviously isolated and a loner. But, I am not ready to throw her under the bus either. A killer will obtain guns. It's just very hard to figure out who is a killer before they kill. Here in lies the dilemma. The mental health system has never been very good at identifying killers before they act.
I am totally against a national data base of the 'mentally ill'. It's an abhorrent concept to me.
That said, I think this 'mental health' issue is a can of worms that no one would want to step into. First of all, it could be used for dissidents, either right or left wing. Don't think you won't ever be considered a dissident. It happens. Stand up for the First Ammedment in some situtations, and you will find yourself on a 'list' real fast. Attend a rally, voila, you are a 'nut'. Oppose the powers that be, and you could find yourself in a mental institution. It's not a far jump that a 'prepper' could find themselves diagnosed with any number of DSM labels, some deservedly so. If we plan on preserving any of our Constitutional rights, I suggest that this mental health idea get bagged fast.
Secondly, it WOULD cause people who need it most, to NOT seek out mental health care. Any one who wants to keep their gun or eventually buy one, will avoid the mental health system like the plague.
Thirdly, it would put the decision of who gets to own a gun in the psychiatrist's lap, and they don't want the responsibility, any more than most of us would want them to have that responsibility. It would open the door to a tremendous amount of litigation. What is mental illness, a bout with situational depression? Should that person never get to own a gun? What is mental illness? Is neurological impairment considered, things like autism, or Tourettes? What if you take any psychiatric medication? Some of those meds are used for reasons other than mental illness. It's a huge can of worms.
It can't be implemented. There are too many ethical snafus.
I would like to see fewer guns on the streets, and to do that, people need to feel safe. People are willing to give up a lot of freedom to feel safe. I don't want to go down that road either.