[eyqs]

There's probably a large societal aspect to this too; the gender imbalance stands out much more than ethnicity, in my opinion.

Note too that each country can only send 6 people, and Asian countries (China, India, arguably Japan and South Korea) have a much larger pool to draw from, although this doesn't explain the prevalence of Asian-Americans on the USA team.

[allendoerfer]

How have Japan and South Korea a larger pool to draw from?

[yompers888]

It's worth keeping in mind that distributions of males tend to have longer tails than their equivalents for females.