A day after José Ángel N. first crossed the United States border from Mexico, he was caught and then released onto the streets of Tijuana. Undeterred, N. crawled back through a tunnel to San Diego, where he entered the United States to stay. Illegal: Reflections of an Undocumented Immigrant is his timely and compelling memoir of building a new life in America. Arriving in the 1990s with a ninth grade education, N. traveled to Chicago where he found...