American law should always reflect our best understanding of natural law. There are two natural law principles that are weighed when granting citizenship at birth. Cruz is through blood. With others it is soil. With others it is some combination of the two.
My natural right to keep and bear arms is not merely a statutory right because it is recognized by statute. A natural born citizen is not merely a statutory citizen when that natural allegiance at birth is recognized by statute.
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.