No, it’s not that simple. His agency published the facts of his bio in direct conjunction w the promised first book. You don’t get to redact just the fact you find inconvenient. It was posited as a crucial element of Obama’s life story. Sorry if you don’t like it. It’s there, in Black and White.
And the agency has stated on that point it made a mistake. And we don't just have to take the agency's word for it. We can compare the Times, Post and Tribune articles from 1990. We can compare the school application Obama's parents made in 1968 stating he was born in Hawaii. We can compare the INS files on BHO, Sr. which indicate he had a son born in Hawaii. We can look to the birth announcements. We can look to the repeated statements by the State of Hawaii.
The agency made a mistake.