It refers to the children of those who lived or have been living in the U.S. because of a family member's job transfer, who studied in the U.S., or who immigrated to the U.S. since the late 1970s, when Japanese companies started penetrating the U.S. market (Ex. Masi OKA, a Japanese American actor).
日系企業がアメリカ進出し始めた1970年代後半から現在にいたるまで、アメリカへ転勤により移住した駐在員家庭や現地留学、移民した人の子供達（例：マシ・オカ）。