Should-Read: Will says: "The standard form of liberal civic nationalism is egalitarian within the in-group of shared citizenship..." There has been something more with American civic nationalism: it is a nationalism of people who have come and whose ancestors have come from all over the world to a place where they can live freely, work hard, raise each other up, and build a utopia to show the rest of the world how good things can be: "He shall make us a praise and glory that men shall say of succeeding plantations, 'may the Lord make it like that of New England'. For we must consider that we shall be as a city upon a hill. The eyes of all people are upon us...", in the words of my ancestor John Winthrop.
All that seems to be lost in the minds of an aging group of greedy white guys, scared that mysterious others are going to take away what they have somehow:
Will Wilkinson: What Drives Opposition to Immigration? In-Group Favoritism, Out-Group Hostility, and Donald Trump: "Friedman contrasts 'xenophobia' and 'nationalism', but I’d like to reframe... (To many of us, xenophobia and nationalism go hand in hand.)... https://niskanencenter.org/blog/drives-opposition-immigration-group-favoritism-group-hostility-donald-trump/