"Do you own any guns?" He said no, even though he had more than twenty, including an Uzi, multiple AR-15's , pump shotguns and God knows how much ammo (he had his own reloading operation in his basement,including kegs of gunpowder). That was good enough for the authorities. He voluntarily committed himself to an institution (thankfully, he was smart enough to know he was out of control and needed help) and his arsenal was waiting for him when he was released.

Registration. Records of sales of guns, ammo, universal back ground checks THAT STAY ON FILE, flags for suspicious weapon buying behavior (i.e. a person suddenly buying a dozen thirty round clips, body armor, multiple guns within a short time span). Mandatory training and licensing for gun buyers, chemical or electronic tags on guns and ammo so they can be traced.

These are the steps that need to be taken to stop at least some of the senseless gun violence.

And in my mind, I don't see how any of these violate a law abiding citizen's right to bear arms.

Not uncommon if a good deal is available, especially if a run is anticipated. Besides, the work around would be simply to buy a lesser amount over a period of time. Some of the mass shooters had been planning their attacks for some time, so a paced acquisition of magazines wouldn't be an issue. Also, what's the purpose of keeping a permanent record of background checks?

consideration at the national level. Further, even at the state level, "flagging" has seious constitutional questions, as there is no crime in posessing large amounts of ammo, multiple guns, armor, etc. In short, a possibly constitutional measure is leveraged to a "list" of suspicious activities. Any "tags" can be developed at any time to see if they work, and if there is a demand for them. Why pass another law requiring technologies which are not proven, let alone desred? As for training, I support this when and if a citizen wishes to carry.

Most so-called "gun crime" is committed by veteran felons. I support "taggng" them for follow-up intervention to integrate them back into society; failing this, they should receive long sentences in prison so society is not threatened by them. Frankly, that is where the problem is, not with tens of millions of law-abiding gun owners.