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LAS VEGAS, NV - OCTOBER 13:  Democratic presidential candidate Sen. Bernie Sanders (I-VT) takes part in a presidential debate sponsored by CNN and Facebook at Wynn Las Vegas on October 13, 2015 in Las Vegas, Nevada. Five Democratic presidential candidates are participating in the party's first presidential debate.  (Photo by Joe Raedle/Getty Images)
LAS VEGAS, NV - OCTOBER 13:  Democratic presidential candidate Sen. Bernie Sanders (I-VT) takes part in a presidential debate sponsored by CNN and Facebook at Wynn Las Vegas on October 13, 2015 in Las Vegas, Nevada. Five Democratic presidential candidates are participating in the party's first presidential debate.  (Photo by Joe Raedle/Getty Images)

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    Bernie Sanders criticized for leadership in VA committee

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Bernie Sanders criticized for leadership in VA committee

Democratic presidential candidate Bernie Sanders was the Chairman of the U.S. Senate Committee on Veterans Affairs during the VA scandal. CNN's Drew Griffin reports.

Bernie Sanders criticized for leadership in VA committee

Democratic presidential candidate Bernie Sanders was the Chairman of the U.S. Senate Committee on Veterans Affairs during the VA scandal. CNN's Drew Griffin reports.