1-Connecticut had/has an assault weapons ban in place before the shooting.
2-It is against federal law to carry firearms into schools
3-It is against federal law for mentally disturbed people to possess firearms
4-It is illegal to murder another human being.
More gun bans will stop future shootings, How?
They'll be as effective as Prohibition, the war on drugs, stopping illegal immigration, stopping drunk driving deaths, etc. In other words - not effective at all. Just another bloated, expensive, failed government program. Oh, but this one would have the added bonus of being un-Constitutional and infringing upon our inalienable rights to defend ourselves. For the big-government socialist with fascist leanings, what's not to like?