"But we also give more in charity, relief and aide to struggling nations than any other nation on earth."

Well, proportionately, you don't actually. Ireland for one gives far more per head, and there are many others. If Americans gave the same proportion as the top ten countries or so, we'd be in sight of cracking a lot of the things wrong with the world.

And that isn't meant to be knocking America. Big countries tend to be more inward looking than small countries, and they don't come a lot bigger than the United States. It's certainly not a matter of lack of generosity on an individual basis. It's a structural problem.