I don't know if that would happen.
Before WW1 there were big German communities in the U.S.A.
There was a voting which language would be standerd languange end 19th century.
It was almost german.
when WW 1 started german americans feel bad about shit german soldiers did with civilians.
They didn't indentify them selves with the germans anymore.
Maybe that also happen for this different reality with japanese americans.