Parental nationality is irrelevant.
It surprises me how persistent this idea comes up that the nationality of someone's parents will overrule the actual birthplace of an individual.
If there was some case law that was clear, maybe it might be worth looking into. But this stuff has been going on since Obama ran, and it has never persuaded anyone with authority to do something about it.
When will this idea be dropped once and for all?
I don't know of any effort to adjudicate this so far...
It is the method that most of the world uses, and which most of the world has used going all the way back to the ancient Greeks.
It also makes far more sense than just declaring anyone born on your land to be a member of your family.
and it has never persuaded anyone with authority to do something about it.
And that is the rub of it. They are perfectly content to believe they understand the issue, even when they do not.
As Reagan said:
"The trouble with our liberal friends is not that they are ignorant... it's that they know so much which isn't so."