I like that in America, nationalism takes on a rather isolationist, anti-imperialist streak.
Post-Civil War, it usually the more liberal, proto-neolib/neocon corporate class that was in favor of our imperialist adventures, while populist nationalists were opposed to them and wanted isolationism.
It was the liberal wing of the Republican Party that wanted us to go into Vietnam, into the Persian Gulf, into Syria, into Libya, and now potentially into Venezuela.