Democratic candidate and Vermont Sen. Bernie Sanders is setting his sights on Hillary Clinton before the Iowa caucuses, NBC News reported.
Sanders, who was in Iowa Friday, went after Clinton on her opposition to the Trans-Pacific Partnership and her initial support for the Defense of Marriage Act
His attacks come a few days before the Iowa caucuses, where polls show a tight race between the two candidates.
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Sanders, who claims to have never run a negative campaign ad in his life, is now being accused of turning negative by the Clinton campaign.
"Does it mention Hillary Clinton? Does it have any image of Hillary Clinton?" Sanders said when asked about the criticism.