In the Supreme Court of the United States, State of Arizona and Janice K. Brewer, Governor of the State of Arizona, in her official capacity, petitioners, v. United States of America, respondent [electronic resource] : on writ of certiorari to the United States Court of Appeals for the Ninth Circuit : brief amici curiae of the American Civil Liberties Union, Mexican American Legal Defense and Educational Fund, National Immigration Law Center, ACLU of Arizona, Asian American Justice Center, Asian Pacific American Legal Center, National Day Laborer Organizing Network, and Friendly House v. Whiting plaintiffs in support of respondent / Jennifer Chang Newell [and 32 others]

The issue presented is whether federal immigration law preempts Arizona's state statute providing for various forms of immigration enforcement by state officers.