It doesn't matter.............but the question has publicly arisen, and some folks are under the mistaken impression that it does. That's why I mentioned it.....to do away with it.
One US citizen parent is apparently enough to be a NBC with president Zero as solid precedence!
Constitutionally.....this is incorrect. But....as you say....now, according to precedence we have a situation. It will likely be resolved in favor of precedence because most politicians will want to take the path of least resistance and avoid any name calling which would certainly accompany their decision to call Obama's election into question.
Thank you for a good response to my query. I think we are on parallel rails.