In the Supreme Court of the United States, State of Arizona, et al., petitioners, v. United States, respondent : on writ of certiorari to the United States Court of Appeals for the Ninth Circuit : brief amicus curiae of U.S. Border Control, U.S. Border Control Foundation, Policy Analysis Center [and 10 others] in support of petitioners /

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