Sen. Elizabeth WarrenElizabeth WarrenAll fracked up: Biden's Keystone State breakdown What do Google, banks and chicken salad have in common? Final debate: War Admiral vs. Seabiscuit MORE (D-Mass.) on Wednesday ripped President TrumpDonald John TrumpTrump admin to announce coronavirus vaccine will be covered under Medicare, Medicaid: report Election officials say they're getting suspicious emails that may be part of malicious attack on voting: report McConnell tees up Trump judicial pick following Supreme Court vote MORE for leading the “most corrupt administration ever.”

Warren went after the Trump administration during an interview with CNN after controversial statements from White House budget chief Mick MulvaneyMick MulvaneyGaffes put spotlight on Meadows at tough time for Trump Trump says he may lower corporate tax rate to 20 percent if reelected Is Social Security safe from the courts? MORE.

"He's so corrupt that he was willing to just lay it all out there in front of everyone," Warren said. “He said, 'I am a government official who pays attention to those who pay me.' If that's not corruption, I don't know what the definition of corruption is."

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Mulvaney, who is also the interim director of the Consumer Financial Protection Bureau, suggested Tuesday  that he gave preferential treatment to lobbyists who had donated to his campaign.

“If you were a lobbyist who never gave us money, I didn't talk to you. If you were a lobbyist who gave us money, I might talk to you,” Mulvaney said at a banker conference in Washington.

“If you came from back home and sat in my lobby, I would talk to you without exception, regardless of the financial contributions.”

Mulvaney is a former GOP congressman from South Carolina.

Warren ripped the suggestion as "pay-to-play."

"That's just another way of saying, 'this joint runs great for those who can hire armies of lobbyists and lawyers and have them make big campaign contributions, but not here for real people,’” Warren said Wednesday.

Warren, who serves on the Senate Banking Committee, has confronted Mulvaney before.

Earlier this month, she told him he was “hurting real people to score cheap political points.”