Open Trade, Closed Borders: Immigration in the Era of Globalization Margaret E. Peters1 Yale University Forthcoming: World Politics Accepted 17 June 2014 Abstract This paper argues that trade and immigration policy cannot be studied as separate policies but instead scholars must take an integrated view of these two foreign economic policies. Trade and immigration policy are substitutes. The choice of trade policy affects immigration policy in labor scarce countries through its effects on firms. Closure to trade increases the average firm level demand for immigration, leading to immigration openness, and free trade decreases the average firm demand, leading to restricted immigration. To test this argument, I develop a new dataset on the immigration policies of 19 states from the late 18th century through the early 21st century. This is one of the few datasets on immigration policy and is the only one to cover the 19th, 20th and 21st centuries. The data show that indeed, trade policy has the hypothesized effect on immigration; immigration policy cannot be fully understood without examining trade policy. This paper, therefore, suggests that trade and other foreign economic policies should be examined in light of immigration policy and each other as well. 1 Assistant Professor, Department of Political Science, Yale University, 115 Prospect St., New Haven, CT 06520;
[email protected]. I would like to thank the editors and anonymous reviewers for their comments. I would like to thank Judith Goldstein for her comments on several drafts as well as financial support for the project. I would also like to thank Michael Tomz, Kenneth Schultz, James Fearon, Jon Pevehouse, Jeffery Colgan, Ashley Jester, Andrew Kerner, James Morrison, Molly Roberts, David Steinberg and Felicity Vabulas for their comments and suggestions as well.