In 2009, Roll ruled that the case Vicente v. Barnett could go forward. The $32 million lawsuit brought by the Mexican American Legal Defense and Education Fund (MALDEF) against Arizona rancher Roger Barnett on behalf of 16 Mexican plaintiffs charged that the plaintiffs were assaulted, threatened, and held at gunpoint by Barnett and members of his family. After Roll's ruling and prompted by several talk-radio programs, he was the subject of hundreds of complaining phone calls and death threats and he and his family were under the protection of the U.S. Marshals Service for a month. Roll declined to press charges when some of those who made threats were identified.