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Now Playing: US withdraws from UN Human Rights Council
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Now Playing: Trump signs executive order ending family separation policy at US-Mexico border
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Now Playing: Trump to sign executive order on family separation
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Now Playing: House GOP voting Thursday to end family separation
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Now Playing: Global outcry from US allies grows against Trump border policy
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Now Playing: US withdraws from United Nations Human Rights Council
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Now Playing: SPECIAL REPORT: Trump says he will act to keep families together
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Now Playing: Trump says he will sign 'something' soon to keep immigrant families together
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Now Playing: Debate over 'zero-tolerance' policy intensifies
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Now Playing: Crisis at the border
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Now Playing: Debate over Trump administration's 'zero-tolerance' policy heats up
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Now Playing: Comey doesn't agree with IG report but respects the criticism
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Now Playing: All GOP senators want to halt separation of families at border, McConnell says
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Now Playing: President Trump digs in on false claim that crime on rise in Germany
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Now Playing: Trump launches into free-wheeling defense of 'zero tolerance policy'
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Now Playing: Lawmakers turned away from migrant detention center
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Now Playing: DHS Secretary Kirstjen Nielsen says separating kids at border isn't abuse
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Now Playing: Rev. Al Sharpton decries separation of immigrant families
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Now Playing: Senators refute Trump's stance that only Congress can end child separation at border