Americans in general have less of a commitment to one another than we might if we were in a tribe, but we have most of that sense. Most of us are willing to give our lives for this nation, which is to say for one another.
We have developed a generous attitude towards the world and one another. We need to remember how rare this is in human history, that a major power would be so tolerant, and so reluctant to use for our own immediate benefit the immense power we wield.
This is the direct result of the Enlightenment inspired enterprise that animated our Founding Fathers, which rested firmly on Christian charity.