Sil, your document means nothing. His mom was a citizen at the time of birth.
So if a boy's father was a citizen, like a soldier on shore leave, when the boy was born say in Russia, and the mother is Russian, then the boy can be president too if he also sneaks into the US (like Cruz did) and only renounces his Russian citizenship two years before he runs for POTUS?
There will be a lot of war babies born abroad who will be thrilled to know they can run for president too, once the legal precedent is confirmed. Of course, that completely negates the intent of the original rule "natural born" because it was created to keep any potential for sedition or treason from foreign influences to the lowest level possible in POTUS. In law, this one especially from a national security standpoint, original intent is everything. This is one part of the Constitution that will be found...like September this year....to NOT be a "living breathing evolving document".