NBC has nothing to do with statute, it is what it is, natural.
Born to two American Citizens on American soil does not require any statutes.
The Founders intent was to eliminate any other loyalties other than to America and its Constitution, other birth circumstance's do not support that ideal.
Jus sanguinis and jus soli according to Haperset satisfies NBC, there are doubts to others.
What better understanding of Natural Law could there be?
It's just common sense, imo.
No natural right is conveyed through statute. Yet statute can and does recognize many natural rights. A statute recognizing natural rights doesn’t make it a statutory right.