The development of anti-Japanese bias in America

The development of anti-Japanese bias in America began well before the start of Japanese military aggression in the 1930s and the bombing of Pearl Harbor on December 7, 1941. Relate what you believe are the most significant factors in the development of these sentiments, particularly among residents of Americas west coast.  You may choose to compare this with the situation of Japanese immigrants living in Hawaii.

Essay should present a thesis.