A former Jeb Bush spokesman on Thursday tore into Donald TrumpDonald John TrumpTrump defends Stephanopolous interview Trump defends Stephanopolous interview Buttigieg on offers of foreign intel: 'Just call the FBI' MORE, saying he's never done a thing to help his country.

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"The only thing he's done well is 'Celebrity Apprentice,' " Tim Miller said Thursday on CNN's "New Day."

Miller added that Trump has "never done anything for the public good."

"He's 70 years old, he's never done one thing," he said, claiming the GOP presidential nominee has never given money to charity or done anything to "advance an issue."

"He's a billionaire. He gives no money to charity. A billionaire. All of us give more money to charity than he does. I'm not anywhere near a billionaire," Miller said.

"He's never advocated for a political issue. He's never been out in the public space saying this is what we can do to make the country better."

Miller also called Trump out for criticizing former Presidents Ronald Reagan, George W. Bush and Bill ClintonWilliam (Bill) Jefferson ClintonDems eye repeal of Justice rule barring presidential indictments Dems eye repeal of Justice rule barring presidential indictments Former Senate Dem leader: 'No way' impeachment trial for Trump would lead to conviction MORE.

"And said they were all terrible. And said he could do better without doing anything," Miller said.

"He's done nothing except for fail his whole life."