Each year in the United States, hundreds of thousands of people are arrested, imprisoned, and deported, trapped in what leading immigrant rights activist and lawyer Alina Das calls the "deportation machine." The bulk of the arrests target people who have a criminal record — so-called "criminal aliens" — the majority of whose offenses are immigration-, drug-, or traffic-related. These individuals are uprooted and banished from their homes, their families, and their communities. Through the stories of those caught in the system, Das traces the ugly history of immigration policy to explain how the U.S. constructed the idea of the "criminal alien," effectively dividing immigrants into the categories "good" and "bad," "deserving" and "undeserving." As Das argues, we need to confront the cruelty of the machine so that we can build an inclusive immigration policy premised on human dignity and break the cycle once and for all.