>Born here along with BOTH parents.
That is the only situation in which no law is necessary to endow citizenship, and by extension who is eligible to be President.
In any other case laws made by men can be manipulated to endow citizenship at birth to whomever they desire. This is what the founders were concerned about, IMO. They did not want foreign influence to be able to manipulate presidential eligibility. We're observing now that the founders were correct.