Snake doesn't really shoot people in SSBB. He uses a variety of explosives though, but its pretty harmless.
Not if your friends are good, he doesn't.
(I'm kidding you, of course.)
I'm assuming you mean that he doesn't actually, like, shoot
and kill people, because he certainly uses firearms to shoot the likes of Mario, Captain Falcon, Link (oh that's right--he's Hylian, not human), and Ness. If you're talking about the fact that there's no blood, you're correct.
In any case, no, the government shouldn't be
banning the violence in video games while making no effort to
ban violence from movies. If they sought to
limit the violence of both, that'd be one thing.
And I'm totally unimpressed with the argument that video games need a ban on violence because video games are interactive. Hockey's plenty interactive and nobody in the government's trying to ban that, right?