Do you not know what "Nationality" means?
"Nationality affords the state jurisdiction over the person and affords the person the protection of the state..The noun national can include both citizens and non-citizens.."
Seems to me that this would cover refugees quite well.
Where does it say Nationality?? I see Naturalization which is defined in what you posted as the legal act or process by which a NON CITIZEN may acquire CITZENSHIP.
You linked the thing, did you not read it? Basically congress makes the rules on how to become a citizen is what it says.