[jda]

Common view is natural-born equates to citizenship at time of birth. Neither Chester Arthur nor Spiro Agnew, nor even Mike Dukakis satisfied NBC under your narrower 2 citizen parents definition and nobody raised an issue. unless you have court rulings to back up that narrower definition, it’s speculative.

So, then, an anchor baby could be POTUS?

[WOSG]

I dont have the definitive answer on that, but if someone is a US citizen at birth, then the common answer would be yes, they satisfy NBC. Read Ankeny court decision, and take that question to a professor of Constitutional law, eg Volokh website.