In the Supreme Court of the United States, State of Arizona, et al., 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 for the Leadership Conference on Civil and Human Rights [and 9 others] as amici curiae in support of respondent / Nancy Morawetz, counsel of record, Wade Henderson, Lisa Bornstein, counsel for amici curiae.

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