Legal or illegal? Preferences on immigration

The political debate about regularisation programmes for undocumented migrants is a very controversial issue. The main goal of this article is to explain why governments decide to grant amnesties to illegal immigrants as a part of their immigration policy. We propose a simple political competition model in which we first derive the voters' preferences over a menu of regularisation programmes. Labour market conditions make skilled workers more pro-regularisation than unskilled workers. We find that, in general, the policy implemented at the political equilibrium is a partial amnesty programme, which is what happens in the majority of the countries in this study.