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(Left to right) Eric Trump, Lara Yunaska Trump, Donald Trump, Barron Trump, Melania Trump, Vanessa Haydon Trump, Kai Madison Trump, Donald Trump Jr., Donald John Trump III, and  Ivanka Trump pose for photos on stage after Trump announced his candidacy for the U.S. presidency at Trump Tower on June 16, 2015 in New York City.
(Left to right) Eric Trump, Lara Yunaska Trump, Donald Trump, Barron Trump, Melania Trump, Vanessa Haydon Trump, Kai Madison Trump, Donald Trump Jr., Donald John Trump III, and  Ivanka Trump pose for photos on stage after Trump announced his candidacy for the U.S. presidency at Trump Tower on June 16, 2015 in New York City.

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Ahead of Iowa caucus, Trump uses new weapon-his family

Sara Murray reports

Ahead of Iowa caucus, Trump uses new weapon-his family

Sara Murray reports