According to this, Lydia Guzman of the group Respect Respeto is texting to a phone tree news about immigration sweeps that Sheriff Joe Arpaio is conducting in Maricopa County, Arizona. The texts are then broadcast to others in the tree: Guzman said she sends the messages to a wide range of groups, including the American Civil Liberties Union of Arizona, Copwatch and various immigrant-rights groups such as Somos America and Puente. She concedes that some who receive the text messages likely use the information to avoid being caught and deported. Per Arpaio: "This little group of people is (in...