ABSTRACT This study explores what happens to migrants fromCentral America to the US during
their journey throughMexico. It traces the ways in which the negative interaction of undocumented
immigrants with restrictive North American policies for international immigration and their
dealings with international companies providing remittances, along with the evolution of
criminal networks on a national scale, increase the vulnerability of these immigrants. The
resulting scenario is one marked by systemic risks, a slow process of development that has now
reached worrisome levels, and gaps in national governability of the immigration processes under
study that exist from the outset and have been ﬁlled by a variety of social agents.