“I want you to understand, I will not promise you something I cannot deliver,” Clinton said Friday at a rally in Denmark, S.C., according to ABC News . “I will not make promises I know I cannot keep.”

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Speaking to a heavily black audience, Clinton also hit the self-proclaimed democratic socialist for his narrow focus on economic inequality.

She aligned herself with President Obama and his signature healthcare law, accusing Sanders of trying to undermine ObamaCare.

“He has called the president weak, a disappointment,” she said of Sanders. “He tried to get some attention to attract a candidate to actually run against the president when he was running for re-election.

“He does not support the way I do building on the progress the president has made, and that includes building on the Affordable Care Act,” she continued.