If a BC was filled out at the time of his birth, that would have been well before any adoption. But it’s been often said that during those days of early statehood that people could obtain documents much later than normal.
Still, any reasonable person with nothing to hide would have produced their orginal BC back when the issue was first raised (as McCain did). I’ve always thought Obama has something to hide, but who knows if it’d have been disqualifying, or merely embarrassing and damaging to his political ambitions.
The thing about adoptions and bc is that the bc is amended to show the adoptive parents names. The one he waved infront of the cameras last year shows Senior as daddy and not Lolo. Of course, not that this matters since it’s fake.