Missed this part did you?
Any one born outside the United States, if one parent is an alien and as long as the other parent is a citizen of the U.S. who lived in the U.S. for at least five years (with military and diplomatic service included in this time)
It’s also why Ted is a Citizen from birth where Obama isn’t. Ted’s Mom was old enough to meet the residency requirement where Barrack’s Mother literally wasn’t old enough...
Nope Teds mom was not in the military or a diplomat. Sorry...