(MSNBC) Federal agents arrested more than 3,100 unauthorized immigrants last week in the country’s biggest-ever operation targeting criminal and fugitive immigrants for deportation, immigration officials said Monday.

From last Saturday to Thursday, agents in all 50 states used intelligence to track down certain immigrants.

The agents started before dawn; a supervisor would brief them about the person they aimed to arrest that day. In Dallas, a video from the raid on the Immigration and Customs Enforcement website shows a supervisor describing a man who had been deported before and who had a drunk-driving conviction.


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