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DES MOINES, IA - AUGUST 15:  Republican presidential candidate businessman Donald Trump speaks with reporters after arriving at the Iowa State Fair on August 15, 2015 in Des Moines, Iowa.  The Iowa State Fair is one of the oldest and largest agricultural and industrial expositions in the United States. The fair runs through August 23. (Photo by Aaron P. Bernstein/Getty Images)
DES MOINES, IA - AUGUST 15:  Republican presidential candidate businessman Donald Trump speaks with reporters after arriving at the Iowa State Fair on August 15, 2015 in Des Moines, Iowa.  The Iowa State Fair is one of the oldest and largest agricultural and industrial expositions in the United States. The fair runs through August 23. (Photo by Aaron P. Bernstein/Getty Images)

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CNN's Poppy Harlow speaks to Roger Stone, former political adviser to Donald Trump, about the presidential candidate's immigration reform plan.

Stone: Trump's immigration plan 'radical and bold'

CNN's Poppy Harlow speaks to Roger Stone, former political adviser to Donald Trump, about the presidential candidate's immigration reform plan.