Why would California workers be against Japanese immigration in the 1920s?

California workers in the 1920s opposed Japanese Immigration due to economic competition and cultural differences. Many white laborers feared that Japanese immigrants would take jobs for lower wages, undermining their own livelihoods. Additionally, there was a growing sentiment of nativism and racism, leading to the belief that Japanese immigrants were not assimilating into American society. This opposition culminated in anti-Japanese sentiment and restrictive immigration policies.