This paper considers a growth model with migrants who do not own capital. The income of domestic residents and their welfare increase with the number of migrants. Then, a public good is introduced. Migrants do not contribute to its financing but induce congestion effects and decrease the quality...

This paper analyses the impact of illegal migration on the optimal path of domestic (resident) consumption. The analysis draws two importants conclusions. First, if illegal migrants and domestic labour are perfect substitutes, illegal migration necessarily lowers the long-run per capital...