The document provides an overview of U.S. immigration history, policies, and the ongoing controversy surrounding both legal and illegal immigration. It discusses the various waves of immigrants to the U.S. from different parts of the world at different time periods, from the late 1800s to present day. In addition, it examines the reasons why people immigrate legally and illegally, where they come from, and possible solutions to illegal immigration such as border security measures or reform policies.

1. U.S. Immigration: History and the Controversy

6. Legal Immigration to the U.S.

7. Legal Immigration in the U.S.

9. Where do Illegal Immigrants Come From? In Percentage

12. Where Illegal Immigrants Live By Percentage