PT - JOURNAL ARTICLE AU - Pearson, Thomas TI - Immigration Enforcement and Origin Country Labor Markets AID - 10.3368/jhr.0525-14310R2 DP - 2026 Jul 13 TA - Journal of Human Resources PG - 0525-14310R2 4099 - http://jhr.uwpress.org/content/early/2026/07/02/jhr.0525-14310R2.short 4100 - http://jhr.uwpress.org/content/early/2026/07/02/jhr.0525-14310R2.full AB - This paper studies how increased immigration enforcement in the destination country impacts labor markets in the origin country. Using variation in Mexican migrant networks and Secure Communities (SC), a policy which expanded local immigration enforcement, I show that the deportation of Mexican migrants from the U.S. increases return migration to Mexico and decreases monthly earnings for workers there. The negative earnings effects are largest for workers most similar to return migrants in terms of their demographics, occupations, and employment types, and are consistent with increased labor market competition.