What We Know About Unauthorized Migration

Unauthorized migration has been an important issue for decades. Because much has changed about this type of migration in the past two decades, this review takes stock of recent scholarship. These studies reveal a new complexity in the unauthorized migration in the early twenty-first century. First, compared with the past, unauthorized migration is more diverse. Whether based on gender, age, or how people enter, there is considerable heterogeneity in the unauthorized migrant population. Second, nation-states approach the issue of unauthorized migration differently than in the past, a fact that has increased the size and prominence of the unauthorized population and is related to the emergence of scholarship emphasizing the social construction of immigrant legal status.