'The Gringo Hunters'

Today, we join an elite police squad in Mexico trying to solve an immigration problem we don’t often hear about: American fugitives fleeing south across the border.

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The Mexican police squad is officially called the International Liaison Unit. But to locals, they’re known as “the Gringo Hunters.”

This spring, Mexico City Bureau Chief Kevin Sieff rode along with this team as they worked to apprehend fugitives who fled American soil for the freer terrain of Baja California. What happens when “the Gringo Hunters” come face-to-face with a murder suspect?