The history of the United States in the twentieth century is inextricably entwined with that of people of Mexican origin. The twenty million Mexicans and Mexican Americans living in the U.S. today are predominantly a product of post-1900 growth, and their numbers give them an increasingly meaningful voice in the political process. Oscar J. Mart nez here recounts the struggle of a people who have scraped and grappled to make a place for themselves...