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EX-DEA AGENT: Trump's border wall would 'serve no purpose' in the war on drugs

Eames YatesMar 4, 2016, 00:47 IST

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Retired D.E.A. agent and "Deal" author Mike Vigil spent roughly 20 years undercover in Mexico and Colombia. Vigil argues that GOP presidential frontrunner Donald Trump's proposal to build a wall on the Mexican border will not stop drug cartels from sending drugs into the United States.

Produced by Eames Yates

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