I thought he was born as Soetero not Obama which he change to later?
No, that is absolutely wrong. The speculation concerns whether or not his adoption, formal or informal, by his stepfather, Lolo Soetoro, resulted in his original birth certificate in the name of Barack Hussein Obama being sealed and replaced with a new birth certificate in the name of Barry Soetoro or other Soetoro surname. In many states, the court which gives approval for a legal adoption of a stepson by a stepfather results in a court order permanently sealing the original birth certificate and birth record, making it unavailable to the adopted child and others without a court order.
Get real!