Okay how is this for precedent! There are a number of cases that have addressed citizenship using Vattel prior to the Wong Kim Ark case. The Wong Kim Ark case which you site as the “gospel” is the only case I have found that does not cite Vattel. The case of Wok Kim Ark completely ignored the Supreme Court’s own precedent. The following is a link to an in depth look at these cases.
http://www.thepostemail.com/2009/10/18/4-supreme-court-cases-define-natural-born-citizen/
Yes, they cited Vatel, but not a single one excluded US-born children of non-citizen parents from natural born citizenship. There's more to Vattel than just his definition of citizenship.
The Wong Kim Ark case which you site as the “gospel” is the only case I have found that does not cite Vattel.
Citing Vattel is not the same thing as endorsing your view of natural born citizenship.
The case of Wok Kim Ark completely ignored the Supreme Court’s own precedent
That is simply false.