Elizabeth Warren Fires Back at Donald Trump After He Calls Her 'Very Racist': He Can't 'Bully Me Into Shutting Up'

Elizabeth Warren is standing her ground after Donald Trump called her "very racist" for claiming Native American heritage.

Asked about Trump's comments – and former Massachusetts Sen. Scott Brown's call for her to take a DNA test to prove her ancestry – during an appearance on ABC's The View on Tuesday, Warren replied, "Donald Trump will say or do anything. So will Scott Brown."

"What this is really about," she continued, "is can they bully me into shutting up? … And the answer is nope, not happening."

Warren's rebuttal comes one day after she campaigned for presumptive Democratic nominee Hillary Clinton for the first time at an event in Cincinnati. The Massachusetts senator ripped into Trump at the Monday rally, calling him "a thin-skinned bully," "a small, insecure money grubber" and "a nasty man who will never become president of the United States."

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Trump's campaign responded to Warren's attack by firing off an email calling her a "sellout" and her alliance with Clinton "a sad attempt at pandering" to Bernie Sanders supporters. Later on Monday, Trump did a phone interview in which he referred to Warren as "Pocahontas," his go-to nickname for her, and claimed that "she used the fact that she was Native American to advance her career. Elizabeth Warren is a total fraud. I know it. Other people who work with her know it. Elizabeth Warren is a total fraud."

Warren, who said on The View that her heritage was not a selling point for any of her past employers, vowed that she would continue her attacks against the presumptive GOP nominee. She added that Republicans should have gone after Trump long before he secured the nomination and that they waited until it was "too late."

"My view on that is, I'm not waiting," she said. "Now is the time to go after him."

Warren is reportedly being vetted as a vice presidential pick for Clinton but both she and the former secretary of state have stayed largely mum on the topic. Asked about it by The View's Whoopi Goldberg, Warren skirted the question, saying simply, "Yesterday was about having a chance to get out there with the woman who is going to be the next president of the United States." "So you're not going to answer the question?" Goldberg asked jokingly. "No, no I'm not," Warren replied, laughing.

Co-host Joy Behar followed up by asking Warren whether she thought America was ready for an all-woman ticket, to which she replied, "Right now I'm just focused on getting one woman elected to the White House."

Her voice breaking with emotion as she described her joint appearance with Clinton at Monday's rally, Warren said, "People start cheering and I see these little girls and these very, very senior women, and I see people holding signs … that say 'Girl Power.' And I stood on that stage with my arm around the woman who's going to be the next president of the United States and I tell you – I got goosebumps."