This is hard to really say... I say if a girl is attractive, she's attractive, no matter what her race is. I wouldn't find a girl unattractive simply because of her race. However I do find that I'm personally attracted to more white girls than others. Asians are up there too. However "American beauty standards" I don't think exist, considering it's up to the person's personal choice as to who they find attractive or not. If the majority of people consider white people more attractive than other ethnicities, then that's just the majority of people's personal choice, I wouldn't consider it "American beauty standards."
Komodo dragon. What's wrong with liking blonde hair and blue eyes? That's his preference just like some people like vanilla ice cream over chocolate ice cream. Is that person discriminating against chocolate ice cream? No that's just their preference.
What's ironic is this: People on the left say you have no control over who you are attracted to when they talk about gays, but if you tell them you only like white women they call you racist, or a nazi in komodragon8's case.