2 The U.S.–Mexico border is experiencing an era of unparalleled trade and exchange. But at a time when legal flows of goods and people are at historical highs, so are illegal cross-border flows of undocumented migrants. Illegal immigration from Mexico became more common in the late 1960s, following the end of the Bracero Program in 1964. The Bracero Program allowed Mexican guest workers to work...

Why Is Child Labor Illegal? We present a theory of the emergence of laws restricting child labor or imposing mandatory education that is consistent with the fact that poor parents tend to oppose such laws. We find that if altruistic parents are unable to commit to educating their children, child-labor laws can increase the welfare of higher-income parents in an ex ante sense. On the basis of an...

Illegal addictive drugs can lead to functional or structural impairment of the central nervous system. This review provides an overview of the structural imaging findings on CT, MR imaging, and conventional angiography related to chronic and acute abuse of the most commonly abused illegal drugs, including cannabis, organic solvents, and amphetamines and opioids and their respective derivatives....

Introduction. Exposure to passive smoking at work has been forbidden for few years in France. This study's aim is to estimate the prevalence of passive smoking at work (PSW), the characteristics of illegal passive smoking and to identify eventual respiratory effects. Methods. Occupational practitioners (OPs) of a French county of 320,000 wage earners were contacted by mail. Then OP answered que...

Abstract There is much debate about the ways in which artificial intelligence (AI) systems can include and perpetuate biases lead to unfair often illegal discrimination against individuals on basis of protected characteristics, such as age, race, gender disability. This chapter describes three cases discrimination. It starts with an account use AI hiring decisions that led based gender. The sec...