Mulvaney defends White House aide over 'dying' McCain comment: It was 'joke' in 'private meeting'

White House budget chief Mick MulvaneyJohn (Mick) Michael MulvaneyProtect the Military Lending Act On The Money: Midterms to shake up House finance panel | Chamber chief says US not in trade war | Mulvaney moving CFPB unit out of DC | Conservatives frustrated over big spending bills Warren suggests Mulvaney broke law by speaking to GOP donors MORE on Saturday defended the White House aide who made a derisive comment about Sen. John McCainJohn Sidney McCainCongress must use bipartisan oversight as the gold standard The Hill's Morning Report — Ford, Kavanaugh to testify Thursday as another accuser comes forward Trump hits McCain on ObamaCare vote MORE (R-Ariz.), saying the real issue was that the "bad joke" had been leaked to the press.

“This was a private meeting inside the White House. It was a joke. It was a badly considered joke that she said fell flat,” Mulvaney, the director of the White House Office of Management and Budget, said during an appearance on Fox News. 

But Mulvaney argued that the leak of the comment posed the greater issue: "The leak was designed to hurt that person. Also, it completely ignored the harm it would do to the McCain family, which is doubly inconsiderate."

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The Hill first reported Thursday that special assistant Kelly Sadler had mocked McCain's brain cancer diagnosis a day after the Arizona Republican had come out against Trump's pick to lead the CIA, Gina Haspel.

“It doesn’t matter, he’s dying anyway,” Sadler said, according to a source familiar with the remarks at the internal meeting.

The White House on Friday faced backlash over the comment from lawmakers and members of the media, with figures such as former Vice President Joe BidenJoseph (Joe) Robinette BidenSaving the transatlantic partnership Biden to campaign for Stacey Abrams next week Dems with political experience could have edge in 2020 primary, says pollster MORE and GOP Utah Senate candidate Mitt RomneyWillard (Mitt) Mitt RomneyMaher makes million donation to Democratic Senate super PAC Poll: House GOP candidate leads in California swing district Super PACs spend big in high-stakes midterms MORE blasting those mocking McCain.

McCain, 81, is in Arizona battling brain cancer.

Sarler called McCain's daughter, Meghan McCain, after news broke of her comment, a source told The Hill on Thursday.

The senator's wife Cindy chided Sadler on Twitter over the comment, while Meghan McCain suggested that the White House aide should be fired.

Despite the controversy over the remark, Mulvaney said Saturday he does not support calls for Sadler to be fired.

“You have to have freedom to speak in a private meeting. We have all said things in private ... that we would never say publicly. I think she handled it appropriately,” he said.