We examine the impact of different types of social networks on the employment and wages of unauthorized and legal Mexican immigrants using data from the Mexican Migration Project. We find that social networks, particularly strong ties, contribute to the economic assimilation of immigrants by...

In panel data the interest is often in slope estimation while taking account of the unobserved cross sectional heterogeneity. This paper proposes two nonparametric slope estimation where the unobserved effect is treated as fixed across cross section. The first estimator uses first-differencing...