We develop a mathematical optimization model at the intersection of homeland security and immigration, that chooses various immigration enforcement decision variables to minimize the probability that a terrorist can successfully enter the United States across the U.S.-Mexico border. Included are a discrete choice model for the probability that a potential alien crosser will attempt to cross the...

In 2008, approximately 12 million immigrants lived illegally in the United States, and large numbers of undocumented foreigners resided also in other advanced destination countries. Hence, attempts at controlling immigration flows seem to often fail. If governments are not enforcing their “official” immigration policy, why do they set such a policy in the first place? The purpose of this paper ...

Age estimation is useful in forensic investigations to aid in the process of identifying unknown victims as well as living individuals. In many countries age estimation is commonly used to assist immigration authorities in deciding whether refugees or illegal migrants have reached that designated age that separates a juvenile from an adult. This is particularly important for the protection of u...

The second half of the 20 century has seen major shifts in the nature and the extent of worldwide migration. While the classical immigration countries such as the United States have remained major receiving areas, their sources of immigration have changed substantially, away from the traditional European sources to Latin America and Asia. At the same time, many societies in Europe have been tra...

Illegal immigration and healthcare costs both continue to rise and cause healthcare providers to resort to increasingly desperate measures to control uncompensated care costs. This Comment focuses on the newest cost-shifting tactic—hospitals transporting uninsured, undocumented immigrants to their native countries. The story of Luis Alberto Jiménez dramatizes this new form of hospital cost cont...

This paper studies the differences in earnings between Mexican legal and illegal immigrants in the U.S. The analysis includes a cross-sectional examination of the wage differences between legal and undocumented workers as well as a longitudinal analysis examining the impact of legalization on the earnings of previously-undocumented workers. It is shown that the average hourly wage rate of male ...

In this paper I estimate the difference in wage gains from legalization between immigrants who were legalized on the basis of family ties, or smaller scale legalization programs, and those who were legalized in a large scale amnesty program (the 1986 Immigration Reform and Control Act, IRCA). Estimates suggest that the increase in wage after legalization is 11.7% higher for immigrants who were ...

A decade ago, the political party of the Italian center-right voted a law restricting immigration. The law became effective in early 2005, when the Italian parliament approved the decree for its application, but one of its articles, granting amnesty for illegal immigrant workers, became immediately effective in July 2002. As a result, 650,000 immigrants were granted the status of foreign nation...