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Open Borders

  • John Kennan

There is a large body of evidence indicating that cross-country differences in income levels are associated with differences in productivity. If workers are much more productive in one country than in another, restrictions on immigration lead to large efficiency losses. The paper quantifies these losses, using a model in which efficiency differences are labor-augmenting, and free trade in product markets leads to factor price equalization, so that wages are equal across countries when measured in efficiency units of labor. The estimated gains from removing immigration restrictions are huge. Using a simple static model of migration costs, the estimated net gains from open borders are about the same as the gains from a growth miracle that more than doubles the income level in less-developed countries.

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File URL: http://www.nber.org/papers/w18307.pdf
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 18307.

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Date of creation: Aug 2012
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Publication status: published as John Kennan, 2013. "Open Borders," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 16(2), pages L1-L13, April.
Handle: RePEc:nbr:nberwo:18307
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  1. Lutz Hendricks, 2002. "How Important Is Human Capital for Development? Evidence from Immigrant Earnings," American Economic Review, American Economic Association, vol. 92(1), pages 198-219, March.
  2. Caselli, Francesco, 2005. "Accounting for Cross-Country Income Differences," Handbook of Economic Growth, in: Philippe Aghion & Steven Durlauf (ed.), Handbook of Economic Growth, edition 1, volume 1, chapter 9, pages 679-741 Elsevier.
  3. Robert E. Hall & Charles I. Jones, 1999. "Why Do Some Countries Produce So Much More Output per Worker than Others?," NBER Working Papers 6564, National Bureau of Economic Research, Inc.
  4. Francesco Caselli & James Feyrer, 2006. "The Marginal Product of Capital," CEP Discussion Papers dp0735, Centre for Economic Performance, LSE.
  5. Klein, Paul & Ventura, Gustavo, 2009. "Productivity differences and the dynamic effects of labor movements," Journal of Monetary Economics, Elsevier, vol. 56(8), pages 1059-1073, November.
  6. Kjetil Storesletten, . "Sustaining Fiscal Policy Through Immigration," Homapage Papers _005, Stockholm University, Institute for International Economic Studies.
  7. John Kennan & James R. Walker, 2011. "The Effect of Expected Income on Individual Migration Decisions," Econometrica, Econometric Society, vol. 79(1), pages 211-251, 01.
  8. Ben S. Bernanke & Refet S. Gürkaynak, 2002. "Is Growth Exogenous? Taking Mankiw, Romer, and Weil Seriously," NBER Chapters, in: NBER Macroeconomics Annual 2001, Volume 16, pages 11-72 National Bureau of Economic Research, Inc.
  9. Douglas Gollin, 2002. "Getting Income Shares Right," Journal of Political Economy, University of Chicago Press, vol. 110(2), pages 458-474, April.
  10. Richard B. Freeman, 2006. "People Flows in Globalization," NBER Working Papers 12315, National Bureau of Economic Research, Inc.
  11. Trefler, Daniel, 1993. "International Factor Price Differences: Leontief Was Right!," Journal of Political Economy, University of Chicago Press, vol. 101(6), pages 961-87, December.
  12. Michael A. Clemens, 2011. "Economics and Emigration: Trillion-Dollar Bills on the Sidewalk?," Journal of Economic Perspectives, American Economic Association, vol. 25(3), pages 83-106, Summer.
  13. Todd Schoellman, 2012. "Education Quality and Development Accounting," Review of Economic Studies, Oxford University Press, vol. 79(1), pages 388-417.
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