I can certainly see it that way, but I'm not sure if that is necessarily the case either. As far as I know, Esau wasn't born in Aram/Syria, and never lived there for any amount of time. I agree that descent can play a role in determining nationality, but there also has to be a line drawn somewhere, otherwise every Israelite and Judean King from Saul to Zedekiah could be Syrian (in addition to almost any O.T. Hero) since they are all descended from Rebekah through Jacob.