), 'Sustaining Fiscal Policy through Immigration', Journal of Political Economy, 108 (2), April, 300-23 -- Ronald Lee and Timothy …-54 -- Assaf Razin, Efraim Sadka and Phillip Swagel (2002), 'Tax Burden and Migration: A Political Economy Theory and Evidence …: Immigration Policy and the American Economy. Princeton University Press, NJ. -- Borjas, G.J. 2003. The labor demand curve is …