>>If one of these weapons gets out there, and that could have been prevented, our collective processes have failed, big time.

Not sure if it was in this thread... but in this forum I've pointed out that there must be hundreds of thousands if not millions of semi-auto weapons in the US and millions of decent citizens who will consider it "patriotic" to cache weapons against what they see as oppression if the state tries to disarm them. Then over the years, firearms will leach from the caches forever. You only need to look at the UK with stringent firearm bans and estimated 4 firearms per 100 population compared to 101 in the US, yet rapidly rising violent crime including illegal handgun crime. And now grenade crime. It seems that murderous types aren't particularly concerned whether their weapons are legal.

A good start would be holding feet to the fire for sloppy reporting to the FBI NICS database that's supposed to stop undesirables acquiring guns. The NRA says the database lacks millions of names, which is hardly a surprise if some states have only reported a hundred names when it should be hundreds of thousands. Ditto with military courts.

Similarly, anybody who expresses a desire to harm others or shows violent antisocial tendencies ought to be flagged, which is fully consistent with the 4th Amendment's probable cause IMHO. Previous administration rules that forbade schools disciplining or even identifying too many minority problem kids need to be overturned, because that's what enabled Cruz whose history clearly is incompatible with firearm possession, yet he passed the police check. Start with those, and then talk to law-abiding weapon owners about appropriate safeguards. But jump straight to firearm controls or state confiscations which is what is meant every time somebody mentions Australia, and people are suspicious that the swamp is using the blood of innocent school victims as a pretext to disarm the citizenry.