US History on immigration, Americanization, racism to Mexican immigrants

Analyze and explain a larger process of U.S. history, and how it has changed or continued over time, using Mongrels, Bastards, Orphans and Vagabonds by Gregory Rodriguez.
Start with a brief introductory paragraph that states your thesis, identifying what specific process you will be describing (immigration, Americanization, racism) and what point you will be making about that process.
Minimum two cited quotes from Rodriguez.
Quotes need in-text citations.
Discussion of thesis and sources must explain historical context, cause/effect, and change or continuity over time.
End with a brief conclusion that summarizes thesis and main points.