What is the setting of Coyotes: A Journey Through the Secret World of America's Illegal Aliens by Ted Conover?

Conover's nonfiction book, Coyotes: A Journey Through the Secret World of America's Illegal Aliens, makes mention of a variety of locations. These locations include San Luis Potosi, Laredo, Phoenix, El Mirage, Santa Monica, Ahuacatlan, Sonoita, and Idaho.