I’ve lived in several countries around the world. But there’s only one where school shooting occur on a regular basis.
In general, I’ve found, it’s good to look at examples elsewhere when you have some deep seated problem.
So, USA, may I suggest you consider taking a look at other countries. Canada is pretty close, Australia is a bit further away, but a decent example of actually doing things in response to a catastrophe.
I predict a dozen southerners (I think of the as northers, given, you know, actual geography) will yell and scream. “Second amendment” they will cry.
It was 200 years ago. A kid would not have been able to do what he did. Things have changed. The laws need to as well. After all, it’s an amendment, and can be further amended!