Migration : economic change social challenge Migration: economic change social challenge Christian Dustmann Economic change. The immigration from the former Soviet Union to Israel: evidence and interpretation Sarit Cohen Goldner Zvi Eckstein and Yoram Weiss ; The role of rural migrants in the Chinese urban economy Paul Frijters Bob Gregory and Xin Meng ; Learning about migration through experiments David McKenzie Social Challenge. No child left behind US immigration and divided families Guillermina Jasso and Mark R. Rosenzweig ; Uninformed policies and reactionary politics: a cautionary tale from the United States Douglas S. Massey ; Are we all now multiculturalists assimilationists both or neither Jack Citrin ; Diversity social capital and cohesion Alejandro Portes and Erik Vickstrom