On March 16, 2026, Chilean President José Antonio Kast launched the construction of border barriers aimed at halting illegal entry of migrants from Peru and Bolivia. This initiative, part of Kast's campaign promises, reflects a growing concern over migration issues that have intensified in recent years. The construction project includes three northern regions of Chile, specifically addressing the border area near Chacalluta in Arica, where the operations commenced with heavy machinery digging trenches to form these barriers.

The Chilean government has set a deadline of 90 days for the completion of these barriers, although specific details regarding the types of infrastructure being implemented have yet to be disclosed. Kast stated the goal is to effectively manage and reduce the influx of irregular migrants crossing the borders, as the situation has been exacerbated by increased movement from neighboring countries. This action is indicative of broader immigration challenges faced by various countries in the region and aims to restore order at key entry points.

Additionally, this construction plan extends to other regions, including Antofagasta and Tarapacá, with particular emphasis on Colchane, which has emerged as a significant passage for migrants from Bolivia. The move raises various implications, including the humanitarian aspects of border control, and it remains to be seen how this policy will impact regional migration flows and relations with neighboring countries.