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Chile Breaks Ground on Northern Border Barriers Under Kast’s ‘Border Shield’

The push relies on emergency powers, drawing warnings from rights advocates over due process.

Chilean President Jose Antonio Kast gives a press conference as a machine digs, as part of measures to deter irregular migration, along the northern border at the Chacalluta border crossing, in Arica, Chile, Monday, March 16, 2026. (AP Photo/Esteban Felix)
A soldier stands near a machine digging along the northern border at the Chacalluta border crossing, in Arica, Chile, Monday, March 16, 2026, as part of the measures to deter irregular migration. (AP Photo/Esteban Felix)
Chilean President Jose Antonio Kast gives a press conference as a machine digs, as part of measures to deter irregular migration, along the northern border at the Chacalluta border crossing, in Arica, Chile, Monday, March 16, 2026. (AP Photo/Esteban Felix)
Chilean President Jose Antonio Kast walks past diggers along the northern border at the Chacalluta border crossing in Arica, Chile, Monday, March 16, 2026, as part of measures to deter irregular migration. (AP Photo/Esteban Felix)

Overview

  • Crews and soldiers began trench and barrier works at Chacalluta on the Peru frontier and in Colchane on the Bolivia border, following Kast’s on-site inspection.
  • Designs outlined by officials include trenches about 3 meters deep, walls up to 5 meters high, watchtowers, autonomous drones, thermal cameras, sensors and biometric systems.
  • Kast declared vulnerable northern sectors a military zone, issued security-focused decrees and appointed Alberto Soto to coordinate an expanded interagency border effort.
  • Officials justify the works as a response to irregular crossings, transnational gangs and smuggling, citing estimates of roughly 120,000 stolen or undocumented vehicles entering Bolivia each year from northern Chile.
  • Human-rights groups caution that the crackdown risks violating due process for migrants, and analysts note Kast lacks congressional majorities even as early polling shows strong public backing for the plan.