No, not "i.e." .
Is is more like "non natural citizens" who will be treated like "natural citizens."
It does not speak to them being natural citizens. It just says they will be treated the same.
“Is is more like “non natural citizens” who will be treated like “natural citizens.”
from Wikipedia:
“The Act also establishes the United States citizenship of certain children of citizens, born abroad, without the need for naturalization: “the children of citizens of the United States that may be born beyond Sea, or out of the limits of the United States, shall be considered as natural born Citizens: provided, That the right of citizenship shall not descend to persons whose fathers have never been resident in the United States”.
Do you see the concept, “natural children” anywhere? Do you see the concept “non-natural citizens” anywhere there?
It explicitly refers to children born of American citizens beyond the seas - born in a foreign country.