Campos J E, Lien D
J Popul Econ. 1995;8(1):23-33. doi: 10.1007/BF00172036.
"Economic theory suggests that transnational migration results from the push-pull effect of wage differentials between host and source countries. In this paper, we argue that political instability exacerbates the migration flow, with greater instability leading to relatively larger flows. We conclude then that an optimal solution to the illegal immigration problem requires proper coordination of immigration and foreign policies by the host country. A narrow preoccupation with tougher immigration laws is wasteful and may be marginally effective." Emphasis is on the United States as a host country.
经济理论表明，跨国移民是由东道国与来源国之间工资差异的推拉效应导致的。在本文中，我们认为政治不稳定会加剧移民流动，不稳定程度越高，导致的移民流动规模相对就越大。我们进而得出结论，解决非法移民问题的最佳方案需要东道国妥善协调移民政策和外交政策。只专注于制定更严格的移民法是徒劳的，而且可能效果甚微。重点是以美国作为东道国的情况。
