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Beschreibung:
Since the September 11 attacks (9/11), the U.S. has seen a tightening of immigration policies. Previous studies find that stricter immigration enforcement has the unintended effect of pushing undocumented immigrants into self-employment. This paper builds on the literature to better understand the changes in the types of self-employment among Mexican immigrants triggered by the tightened immigration enforcement after 9/11. Using a difference-in-differences approach, and the recently developed measures by Fairlie and Fossen [2018] to distinguish between necessity and opportunity self-employment, we find that both necessity and opportunity self-employment increased among Mexican immigrants after 9/11. However, the effect is most prominent on necessity self-employment, consistent with the hypothesis that they are pushed into self-employment as a survival alternative.