In the Supreme Court of the United States, 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 of former commissioners of the United States Immigration and Naturalization Service as amici curiae in support of respondent / E. Joshua Rosenkranz, Jessica S. Pers, Michael K. Gottlieb.

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