I wonder how the foreign policies of the United States would look if we wiped out the national boundaries of the world, at least in our minds, and thought of all children everywhere as our own.
Since the beginning, the US presidents (all of European stock, of course), had been promoting slavery, extermination campaigns against the native population of North America, barbaric wars of aggression against Mexico, and other Latin American countries, the Philippines, etc. Has anything changed now? I highly doubt it.