"Vattel was by far the most quoted legal source in pleadings in American cases, by almost a factor of 4, between 1790 and 1820. (Nussbaums Concise History of the Law of Nations, 1962)."
Domestic decisions regarding a nation's own citizenship is not decided by international law, but it is clear you would prefer to have the United States subservient to the crackpots in The Hague.
That's a strawman argument. Pointing out that our understanding of citizenship (as opposed to subjectude) derives from Vattel rather than English common law, is not even slightly equivalent to any desire to let Euroweenies have a say in our affairs.
This is you attempting to project views onto me that I don't have.
If we were referring to the Magna Carta as an early source of the rights we inherited from the English, you would be suggesting I want us to be ruled by England. Same sort of nonsense.