Sen. Elizabeth Warren Elizabeth WarrenGOP set to release controversial Biden report Biden's fiscal program: What is the likely market impact? Warren, Schumer introduce plan for next president to cancel ,000 in student debt MORE (D-Mass.) said the emails written by Democratic National Committee (DNC) employees released as part of hack last month should never have been sent.

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"It is an embarrassment to the party and it is an embarrassment to the nation," Warren said during an interview that aired Sunday on WCVB-TV in Boston.

During the interview, the Massachusetts senator said she didn't "understand" why Democratic presidential nominee Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE gave former DNC Chairwoman Debbie Wasserman Schultz a role on her campaign following the email hack and ensuing scandal.

A trove of emails was released by WikiLeaks last month that appeared to show officials at the DNC planning how to undermine Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE's presidential campaign.

After the hack, Wasserman Schultz resigned from her role, along with other top officials at the DNC.

"I think that the right thing was that Debbie Wasserman Schultz resigned. I think that was appropriate," Warren said. "People have been fired. I think that's appropriate."

Warren also offered praise for Donna Brazile, who is serving as the party's interim chairwoman. Warren called her a woman "of real integrity and strength."

"She's not going to be pushed around in that job, I think she's going to evaluate what we need at the Democratic Party and I'm grateful for that," she said.

"We need somebody to get in there and clean house."