Very, very interesting. This has long been a point of contention on these bc threads.
A lot of people have tried to make the argument that because the Constitution doesn't define NBC, that anyone with even the most tenuous hold on American citizenship can be considered eligible for POTUS.
This seems to argue the reverse.
Yes it is interesting. They also point out that just because a statute states that some one is a natural born citizen (NBC) does not imply that he or she is such a person for constitutional purposes.
Clearly a child born in the US, and subject to US jusrisdiction, whose parents are both US citizens, is NBC, beyond that it is all a bit murky.