That seems to be a trend which is improving however (more Asian Male/Caucasian Female couples) At least in California among professionals.
Without being too cynical, I attribute this to a natural outgrowth of the economic success of AMs, the rising tides in Asia, and more and more AMs appearing in media. (e.g. Daniel Dae Kim in Lost) Let's be honest, men's romantic liberty in choosing mates is often proportional to economic success.
It all started with Russell Wong and the Noxema Girl in "Vanishing Son" :)
Possibly the kindest way I've ever seen that phrased.