Umm, no, I consider myself exactly what I am, mixed. I feel no need to identify as one or the other. I'm neither and both. I am a white-presenting woman of mixed race. Sorry, I thought I'd made that clear.
I'm intrigued by your Obama comment. Why do you say he was culturally white? I'm seriously asking because if he weren't President (now former President) and he was Barack the school teacher or Barack the garbage man, I don't know.... What does culturally white mean?