No, not necessarily. I know it's really hard to understand for those who are not adopted, but for real, the states change these things all the time. For instance, I tried to help my former daughter-in-law get a copy of her birth certificate recently. She was born in Alabama. When she was 12, she was adopted in Iowa. For some completely unknown reason, the Iowa judge decided she was born in Georgia. She has actually never set foot in the state of Georgia. She was not born there. Yet, the state of Georgia issued her an officially stamped birth certificate.
I'm not saying Obama wasn't born in Hawaii, but I am saying it is extremely naive to believe states do not alter these records on a whim. The only way to tell if the information on someone's birth certificate is authentic or not is to get into the vault.
Edit: Well, the reason isn't completely unknown. She had an older sibling who was born in Georgia. We figure it was easier for the judge to just issue new certificates out of the same state regardless of the facts of the actual births.
Even if you're not adopted, your birth certificate can be changed, and often is. Usually, it means nothing. Mine was changed, and I discovered it about 20 years ago when I needed a new, certified copy.
The original birth certificate that I had in my possession had not been amended. When I needed a new certified copy, I noticed that it had been amended. I called the state, and they said that they are often changed after birth (meaning up to a few months after birth) when they receive the final paperwork from the doctor.
Of course when I first saw it, I figured I had been adopted. THAT was an interesting phone call home with me calling my parents liars, etc. LOL!
In my case, it appeared that one of my parent's names was slightly changed. IIRC, it was my mother's middle initial from her maiden name initial to her middle name initial--something trivial like that. ANY change is considered an amendment.
I have no idea what is up with Obama's birth certificate. I find it hard to believe that if everything is in order that they would go to these lengths to quash all investigative efforts, given the constitutional requirements.