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CARMEL, IN - MAY 02:  Republican presidential candidate Donald Trump speaks during a campaign stop at the Palladium at the Center for the Performing Arts on May 2, 2016 in Carmel, Indiana. Trump continues to campaign leading up to the Indiana primary on May 3.  (Photo by Joe Raedle/Getty Images)
CARMEL, IN - MAY 02:  Republican presidential candidate Donald Trump speaks during a campaign stop at the Palladium at the Center for the Performing Arts on May 2, 2016 in Carmel, Indiana. Trump continues to campaign leading up to the Indiana primary on May 3.  (Photo by Joe Raedle/Getty Images)

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    Why Donald Trump says he won't release his tax returns

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Why Donald Trump says he won't release his tax returns

Breaking from tradition, presumptive Republican presidential nominee Donald Trump explains why he won't release his tax returns.

Why Donald Trump says he won't release his tax returns

Breaking from tradition, presumptive Republican presidential nominee Donald Trump explains why he won't release his tax returns.