The constitution demands that a president be a “natural born citizen”. It is the supreme court that has defined “natural born citizen”. Three times no less. It is all in simple clear English offering no ambiguity. This leads one to suspect the motives of those who claim otherwise.
Except that 1) None of the three cases you refer to deal with the issue of eligibility for POTUS, and 2) we have Obama as a sitting President. Thus, your argument is incorrect.