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Most countries across the globe introduce visa restrictions to regulate immigration, yet little is known about their effect on migrants' decision to migrate and their well-being. I study the mass displacement of Venezuelan nationals, and through a difference-in-differences research design, I compare the effectiveness of introducing visa restrictions in reducing overall migration flows in certain countries across South America. I use a data set of 85,000 migrants and refugees − mostly Venezuelans − surveyed by the UNHCR. Findings suggest that visa restrictions increased the likelihood of irregular entry and irregular visa status for migrants while also leading to changes in their priorities. Unexpectedly, I do not find evidence of increased violence suffered by migrants who switch towards irregular entry channels in specific countries. This research contributes to the academic and policy debate on the effectiveness of visa restrictions on migratory flows, as well the literature on the effects of migration policies on migrants' well-being.
Omar Hammoud-Gallego (Sat,) studied this question.