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El Chapo trial: Former prison warden testifies on cartel murders

Former prison director Dámaso López took the stand in the El Chapo trial, telling the jury about his dark relationship with the drug lord. López told the jury about the hit El Chapo ordered on his own cousin, and how he ordered the assassination of a police officer. Criminal defense attorney Vinoo Varghese joins CBSN to sort through the testimony and discuss how this trial influences the border wall debate.
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