that doesn't really make sense. American's don't know about war? um...America has constantly had it's finger in a war pretty much since this country was founded. No good wars going on at the moment elswhere we can butt in?......we'll just split the country in half and fight ourselves.
http://en.wikipedia.org/wiki/List_of_wars_involving_the_United_States
the basis of this topic is ridiculously retarded.
America has played a part in lots of wars. But there was never a war which had a major effect in the US itself, (apart from the war of independence, and Pearl harbor which was part of the plan anyway).
Its quite hard to get to except through Mexico, Canada by way of Alaska, or an island base like Cuba.
This is actually what makes the US safe and Unsafe because any country which contemplated it would have to do a massive all out attack, by air. Plus nukes would have to be used first because the US would use them if they were attacked.