This book traces the history of Mexican migration into the United States, examining early relations between the United States and Mexico, and describing key events and incentives, changes to immigration laws, migratory patterns, and related topics. It details the origins and evolution of the movement of people from Mexico into the United States from the first significant flow across the border at the turn of the twentieth century up to the present day. It considers the issues from the perspectives of both the United States and Mexico; Offers a reasoned assessment of the factors that drive Mexican immigration, explains why so many of the policies enacted in Washington have only worsened the problem, and suggests what policy options might prove more effective; Argues that the problem of Mexican immigration can only be solved if Mexico and the United States work together to reduce the disequilibrium that propels Mexican immigrants to the United States.