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Rubio stands by differences with Trump but won’t ‘take shots’ at him

"My policy differences and reservations about Donald's campaign are well-established," Rubio said Tuesday.

Sen. Marco Rubio (R-FL) speaks at the Hudson Institute May 10, 2016 in Washington, DC. (Photo by Win McNamee/Getty)
Sen. Marco Rubio (R-FL) speaks at the Hudson Institute May 10, 2016 in Washington, DC.Getty Images

Alexandra Jaffe