No Brasil, infelizmente, 90% dos economistas se rendeu às barreiras à entrada dos profissionais de Ciência Política e afins e não estudam muito grupos de interesse. Uma minoria, vá lá, faz isto. Eis aqui um exemplo aplicado aos EUA.
Working Paper No. 08/244: Do Interest Groups Affect U.S. Immigration Policy?
Author/Editor: Facchini, Giovanni ; Mayda, Anna Maria ; Mishra, Prachi
Summary: While anecdotal evidence suggests that interest groups play a key role in shaping immigration policy, there is no systematic empirical analysis of this issue. In this paper, we construct an industry-level dataset for the United States, by combining information on the number of temporary work visas with data on lobbying activity associated with immigration. We find robust evidence that both pro- and anti-immigration interest groups play a statistically significant and economically relevant role in shaping migration across sectors. Barriers to migration are lower in sectors in which business interest groups incur larger lobby expenditures and higher in sectors where labor unions are more important.