There's no doubt, considering Obama's mother was an American citizen that he was born an American (even if he was born in Kenya or where ever).
Though he may have at one time stated that he was Kenyan born, that would not have in my mind disqualified him from candidacy, because his mother was American. I'm not sure why he would have tried to hide this or was even ashamed of it. One thing for certain, at one time he claimed it.
The above caption was from a promotional booklet produced in 1991 by Barack Obama’s then-literary agency, Acton & Dystel, which touts Obama as “born in Kenya and raised in Indonesia and Hawaii.”
http://www.breitbart.com/big-govern...t-1991-born-in-kenya-raised-indonesia-hawaii/
All that being said, I believe that he was born in Hawaii. I'm just not sure why he lied about being born in Kenya in the 1991 promo.