I'm not so sure one has to be born here. See my post On Constitutional Eligibility from January 2016.
ML/NJ
Born here of citizen parents.
Anything else can allow for foreign influence which is what they were trying to avoid and why they stipulated it.
I believe they used Vattel’s definition.
Blackstone uses natural-born and native-born interchangeably. That’s quite likely why the naturals-vs.-natives argument has fallen apart and why the radical Birthers don’t cite Blackstone any more.
There are only two types of citizens: natural-born and naturalized.
Lurkin thinks children of people serving their country overseas aren’t eligible to be President.