The changing immigration laws in the U.S. was another factor in the increase of Mexican immigrants. These laws limited the number of Japanese immigrants by the Gentleman’s Act and the Chinese exclusion act f 1882 which limited the number of Chinese immigrants as well. The Mexican immigrants made up for the number of Japanese and Chinese migrants. This caused a push pull effect. Push by México’s civil war and political unrest and the shortage of labor as a pulling effect by the United States labor