Nope, you gotta' check your state laws, fully auto weapons are legal in many places throught the United States.
I seriously doubt that. Instead of me going through 50 states and attempting to discover this for myself, why don't you list a state or two where fully automatic weapons are legal? I am of the opinion that full auto weapons ban is a federal law, not a state law. That's why the ATF get's involved in these cases. If any state would allow fully-auto weapons it would be Texas. And Koresh was breaking laws by owning them.
yes he could do that but he would get shot in america
Depending on the neighborhood. If he was in a bad neighborhood, then the door is most likely locked but in the average neighborhood, he would probably just get his ass kicked or verbally berated. And, I would like to add that it looked as though he was about to get his ass kicked when he did it in Canada. At the least, he was about to get berated. But, when some weirdo opens your door and your first instinct is to kick his, but then you notice that he has a camera crew behind him, you might just hesitate long enough to get that exact shot that was in the film.