My thesis examines how enhancing enforcement against unauthorized immigration in the United States impacts the employment patterns of legal migrant workers in undocumented labour intensive sectors. I focused upon a case study of the effects of Arizona Senate Bill 1070 on the hiring of H-2A temporary visa workers in agriculture.
Using a data-driven approach to select a weighted set of control states to simulate counterfactual outcomes, I found that the passage of this law decreased employment of these visa workers in Arizona by 36 per cent.
