@OnTheFritz,
Japanese Americans are now a minority of Asians in the United States. We used to be the second largest Asian population after the Chinese in the United States before the 1950's. I found this on the internet: Image result for largest asian groups in the united states
This made Asian Americans 5.6 percent of the total American population. The largest ethnic groups represented in the census were Chinese (3.79 million), Filipino (3.41 million), Indian (3.18 million), Vietnamese (1.73 million), Korean (1.7 million), and Japanese (1.3 million).
Demographics of Asian Americans - Wikipedia