She did not get Japanese citizenship; she got U.S. citizenship because I legally registered her birth and applied for a passport on her behalf at the U.S. Embassy in Tokyo. All she gets are a few extra merit points when she applies for or renews her working visa as a resident (but not national) of Japan.
OTOH, my granddaughter (from another daughter) gets automatic Japanese citizenship even though she was born in the United States because her father is a Japanese national, though lawfully a permanent resident of the United States.
Very interesting. I believe that the purpose of Article II, Clause 1, section 5 was to minimize the likelihood of undue foreign influence on the office of POTUS, PARTICULARLY from a father owing allegiance to a foreign sovereignty. The founders were clearly (and politically incorrectly) patriarchs.
They believed that the citizenship of the father accrued to the children, a prinnciple which most certainly was obtained from Vatel and the Law of Nations, which SCOTUS used for it’s definition of NBC in the Venus Merchantman Case of 1814.
An Article II NBC can not be born with any other possible citizenship at birth. That is the point that we are trying to make.