Natural Born Citizen has ALWAYS meant Citizen at the moment of Birth.
Common Law and Natural Law controlled who was, indeed, a Citizen at Birth, UNTIL Congress acted on that matter and until the 14th Amendment.
Case law based on Common Law and Natural Law is now MOOT on this matter.
Not so fast — natural born citizen also means the person is free at birth from common law claims by other countries to a partial citizenship. Obama at birth was partly a British subject by common law. The NBC requirement of the constitution was meant to avert any such conflict of interest.
As soon as you mention the 14th amendment, you show your ignorance. The 14th amendment has NOTHING to do with Natural Born Citizen.
The U.S. Department of State disagrees with your assertion.
Foreign Affairs Manual
7 FAM 1131.6-2 Eligibility for Presidency
(TL:CON-68; 04-01-1998)
a. It has never yeen determined definitively by a court whether a person who acquired U.S. citizenship by birth abroad to U.S. citizens is a natural born citizen within the meaning of Article II of the Constitution and, therefore, eligible for the Presidency.
d. (snip) In any event, the fact that someone is a natural born citizen pursuant to a statute does not necessarily imply that he or she is such a citizen for Constitutional purposes.
A statutory natural born citizen may or may not be equivalent to a Constitutional natural born citizen. Until we get a ruling from the SCOTUS, there is only one group of citizens about which there are absolutely no doubts. The Constitutional natural born citizenship of every other group is up for debate.