Book excerpt: The Southwestern border is one of the most fascinating places in America, a region of rugged beauty and small communities that coexist across the international line. In the past decade, the area has also become deadly as illegal immigration has shifted into some of the harshest territory on the continent, reshaping life on both sides of the border. In Hard Line, Ken Ellingwood, a correspondent for the Los Angeles Times, captures the heart of this complex and fascinating land, through the dramatic stories of undocumented immigrants and the border agents who track them through the desert, Native Americans divided between two countries, human rights workers aiding the migrants and ranchers taking the law into their own hands. This is a vivid portrait of a place and its people, and a moving story of the West that has major implications for the nation as a whole.