Please see my post # 46. It is surely within the realm of possibility that the birth notice was called into the newspaper after the baby was born abroad in Kenya. After all, the newspaper in which the announcement appeared came out nine days after the DOB, allowing ample time for mother and child to return home from Kenya. Or the maternal grandparents could have called in the announcement after receiving word of the birth from abroad or from the continental US, even if mother and child hadn’t returned home by the time the announcement was printed.
Could be that Stanley Ann, or mom Madelyn, placed the announcement as an anticipatory rebuttal of any future whispers that little Barack's parents weren't married (at least not to each other) when he made his debut.
If it was his mothers intent on having him registered as an American it is completely plasible that his grandmother put the announcement in the paper with her address. Once he and his mother made it to the states all she had to do was apply for a delayed birth certificate. I think that is why he doesn’t want it shown. According to the article prior to 1971 it possible to give a Hawaiian citizenship even though the birth didn’t occur there.