I can't find anywhere if Wong was a citizen
Mention all over of his ethnicity, and his nation of origin, but nowhere is anyone saying if he was a naturalized citizen, or a resident alien. Since he had a NYS pistol permit for 12 years, I doubt he was an illegal alien. They have mentioned everything else, it seems, why not this?
30rnd magazines? All those shots in a "minute"? Seems almost tailor made for the gun control crowd. On the other hand, rapid fire in a closed room, kind of like the proverbial "shooting fish in a barrel".
He may have been quite skilled. Skill does not equate to a sane individual. All skill means is that one is skilled. Nothing more.
The price of ammunition is the key to stopping the shootings? I rather doubt it. He killed himself, after all. Somehow I don't think the cost of the ammo was his prime consideration.
And please remember that to date, the largest number of people murdered by a single individual (99) was not done with guns costing several hundred dollars or ammo costing $20 a box. It was done with some hardware store chain, padlocks, matches, and a gallon of gasoline. Total cost? Probably uner $20.