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MT. PLEASANT, SC - DECEMBER 7: (EDITORS NOTE: Retransmission with alternate crop.)  Republican presidential candidate Donald Trump speaks to the crowd at a Pearl Harbor Day Rally at the U.S.S. Yorktown December 7, 2015 in Mt. Pleasant, South Carolina. The South Carolina Republican primary is scheduled for February 20, 2016. (Photo by Sean Rayford/Getty Images)
MT. PLEASANT, SC - DECEMBER 7: (EDITORS NOTE: Retransmission with alternate crop.)  Republican presidential candidate Donald Trump speaks to the crowd at a Pearl Harbor Day Rally at the U.S.S. Yorktown December 7, 2015 in Mt. Pleasant, South Carolina. The South Carolina Republican primary is scheduled for February 20, 2016. (Photo by Sean Rayford/Getty Images)

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    Donald Trump: Ban all Muslims from entering U.S.

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Donald Trump: Ban all Muslims from entering U.S.

Donald Trump's Muslim plan is stirring controversy and criticism. CNN's Jeff Zeleny reports.

Donald Trump: Ban all Muslims from entering U.S.

Donald Trump's Muslim plan is stirring controversy and criticism. CNN's Jeff Zeleny reports.