I usually assign his *blame Bush* mind set. But as you noted, he has no connection to US history....as a second generation child of refugee immigrants or descendant of former slaves or from having spent his formative years in the classrooms and neighborhoods of America.
Even though he has been elected to the most powerful office of the most powerful nation on earth, he behaves like a man without a country.
Maybe even ZERO doesn’t know where he was born and has no Country. :)