The majority of the japanese-americans who were interned during the war were not actually citizens of the united states.

That statement is FALSE.

Two-thirds of the Japanese-Americans who were confined to internment camps were natural-born citizens of the USA.  There were around 70,000 of these persons who were citizens of the US, born in the US, who were included along with those who were first-generation Japanese immigrants to the country.  It didn't matter who you were or what your profession.  If you were of Japanese ancestry, you were considered suspect.