Question

Are japanese and chinese americans colonized or immigrant groups?

Answer 1

Both Chinese and Japanese American are immigrants and not the colonized.
People from Japan began migrating to the US following the socio-political changes arising from the Meiji Restoration of 1868. In 1907, the "Gentlemen's Agreement" between the governments of Japan and the US ended immigration of Japanese unskilled workers but allowed the immigration of businessmen, students, and spouses of Japanese immigrants already in the US. The Immigration Act of 1924 made immigration further strict. After world war 2 , immigration policy was changed significantly. recent amendments to immigration changes have not much affected Japanese immigration vis-a-vis Chinese.

Major Chinese immigration to America started during 1849 California Gold Rush, which drew the first significant number of laborers from China for gold mining and other menial jobs.
The Chinese Exclusion Act 1882 restricted te Chinese immigration .
During and after World War II, immigration restrictions were eased as the US allied with China against Japan. Today various reform has affected Chinese immigration to America such H1b visa reform.