The Marines would not allow her to put white as her race.
There was a biracial child in my hometown who identified as white. She was just as much white as black, maybe a bit more.
A former girlfriend of mine was a fairly dark-skinned middle eastern woman who was ADAMANT that she was white (caucasian). And, really, she was, despite the fact that she was a few shades darker than half the Mexicans around.