the complex problem of illegal migration at the southwestern border of the United States. Special thanks also go to Michael Hoefer, Director of the Office of Immigration Statistics at DHS, who played a key role in developing this study and who served as the Department’s liaison with the panel during the course of its work.

The panel learned much from discussions on surveys and other data initiatives at the November 2011 workshop, where presentations were made by Mark Borkowski, U.S. Customs and Border Protection, DHS; Alfredo Bustos, Instituto Nacional de Estadística y Geografía (INEGI); Wayne Cornelius, University of California, San Diego; Elizabeth Grieco, U.S. Census Bureau; Douglas Massey, Princeton University; Elsa Pérez Paredes, INEGI; Jeffrey Passel, Pew Hispanic Center; Michael Rendall, University of Maryland; Melissa Scopilliti, U.S. Census Bureau; and Duncan Thomas, Duke University. The work of the panel was also informed by the trips made by several members to the southwest U.S. border and to Tijuana, Mexico—arranged, respectively, by Luke Lopez of U.S. Customs and Border Protection and by Marie-Laure Coubes and Rene Zenteno from COLEF. Finally, the panel is grateful to Michael Hoefer for providing useful information about the general structure and content of DHS administrative data1 and for his assistance in advancing the panel’s data request within DHS.

Several members of the staff of the NRC made significant contributions to the report. Malay Majmundar served as study director for the panel and was instrumental to the success of the panel’s work. He made sure that all the i’s were dotted and t’s were crossed in the report’s substantive and technical discussions, kept the panel engaged in the project and abreast of developments, and wrote significant portions of initial drafts of the report. Michael Siri provided key administrative support to the panel and efficiently organized meetings and field trips. Thanks are also due to Kirsten Sampson Snyder for helping guide the report through review, Robert Katt for skillful editing, and Yvonne Wise for managing the production process. Tom Plewes provided valuable guidance and oversight during the course of the study, and his many years of experience and knowledge of the NRC study process are gratefully acknowledged. Connie Citro was helpful as usual and provided many valuable comments and suggestions.

This final report has been reviewed in draft form by individuals chosen


1 During a briefing with DHS immediately prior to the public release of this report, the panel received additional clarifying information regarding the structure and content of DHS administrative data. Specifically, it learned that although the data are not integrated across the constituent agencies of DHS for “analytical purposes,” they are so for “enforcement” purposes. Although this did not change the panel’s conclusions or the thrust of its recommendations, text was added to the report in the Summary, Chapter 5, and Recommendation 5.1 to reflect this distinction.

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