This repulsive article in The New York Times, Young Japanese-Americans Honor Ethnic Roots, seems to wink & nod at those who frown upon intermarriage between whites and Asians, but strewn in the midst of a clutter of anecodte is one pleasant & undeniable numerical fact:

The number of Americans who identify themselves as Japanese declined to 796,700 in the 2000 census, from 847,562 in 1990, partly because of low immigration and birth rates....

Mr. Tate said the tide had turned. Along with those who identified themselves as Japanese in the 2000 census were more than 350,000 who cited Japanese and other backgrounds, the highest rate of multi-ethnic identification of any Asian group.