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Warren: Trump a 'small, insecure money-grubber'
02:37 - Source: CNN

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Scott Brown spoke Monday on behalf of Trump

He ran against Warren in 2012

CNN  — 

Former Sen. Scott Brown on Monday stepped into the attack dog role for Donald Trump, saying his former Senate opponent Elizabeth Warren should “take a DNA test” if she wants to prove her Native American heritage.

“She’s not Native American, she’s not 1/32nd, she has no Native American background, except for what her family told her,” Brown told reporters on a conference call hosted by the Republican National Committee, hours after Hillary Clinton and Warren appeared at an event together. “The easy answer, as you all know, is that Harvard and Penn can release those records, she can authorize the release of those records, she can take a DNA test, she can release the records herself. There’s never been any effort,” Brown said.

Warren responded on Tuesday telling the hosts of ABC’s “The View” that the comments were aimed at bullying her “into shutting up.”

“What this is really about is can they bully me into shutting up?” she said. “Can they be nasty enough and ugly enough and throw enough in my direction that I will say ‘oh’ and just go back into the shadows? And the answer is nope, not happening.”

Warren and Clinton appeared at a campaign event together earlier in the day, a large part of which was spent slamming Trump, the presumptive Republican nominee.

RELATED: Elizabeth Warren: Donald Trump would ‘crush you into the dirt’

Warren has previously said her mother was “part Cherokee and part Delaware.” Brown called the Massachusetts Democrat’s claimed Native American heritage “a reverse form of racism,” showing “very serious character flaws.”

“Secretary Clinton is considering making someone the vice president who has very serious character flaws when it comes to honesty and credibility and dealing with her heritage, and what did that do? That took away somebody who truly was a Native American and gave that opportunity to somebody who is not, and that’s just not right. It’s a reverse form of racism, quite frankly.”

The issue has come up before, in the the 2012 Massachusetts Senate race. Brown and supporters frequently brought it up on the campaign trail in discussing Warren’s applications to law school teaching roles at Harvard and the University of Pennsylvania. Brown had said Warren “checked the box claiming she was Native American” in her applications, but a Washington Post fact check found “there is no proof that she ever marked a form to tell schools about her heritage, nor is there any public evidence that the universities knew about her lineage before hiring her.”

Warren, a first-time candidate, defeated Brown, who later moved to New Hampshire and ran unsuccessfully for Senate from the Granite State.

Brown has since become a prominent surrogate for Trump. On Monday he also critiqued Warren’s willingness to appear alongside Clinton, whom he dubbed “Queen of Wall Street,” calling her support of the presumptive Democratic nominee “hypocritical.”

Sources tell CNN Warren is among those under consideration for Clinton’s vice presidential pick. Asked whether he hopes she makes the cut, Brown said Clinton has “much better choices,” pointing to Virginia Sen. Tim Kaine and New Jersey Sen. Cory Booker, whom he described as “more vetted, more logical choices.”

As vice presidential speculation fuels for Brown himself, he would not answer whether he is being vetted by the Trump campaign.

“He will release those names when he feels it’s appropriate,” Brown said, directing inquiries to the Trump campaign.

This story has been updated to reflect that the Scott Brown conference call was hosted by the Republican National Committee.