“And it continues:
PROVIDED, That the right of citizenship shall not descend to persons who’s fathers have never been resident in the United States.”
Correct. Citizenship to those born abroad extends for the initial generation. If the child born overseas never resides in the US, then his child will not be considered a citizen, although his parent was. It is still discussing those born overseas.
What is the point that you are trying to make here? I have way to many pings going back and forth to keep track