There are quite a few Mexicans, of Asian ancestry. After the railroads were completed, in The West, many Chinese laborer neighborhoods were burned down by the locals, and the residents fled south of the border.
there were quite a few Chinese in mexico and when the Mexican revolutionaries starting going about sacking and looting they fled north.
A family named Wong in San Antonio has been there since the Mexican Revolution. They started a famous restaurant and did very well. Are doing well.