Again, this ain't some new brilliant idea you've got there. Isolationism is old as hell and it still has adherents, sure. It dovetails nicely with your worldview of "foreign workers that live in huts and eat rice every night, so they can afford to work for peanuts."
There's a few people that look at the reality of history and disagree with Isolationism (such as GW on Sep 12), and don't think Switzerland is geographically, economically or otherwise comparable to America. Enjoy.
If we weren't meddling in the politics of the mideast, and teaching them all about technology (like how to fly planes), there would have been no 911.