CNN’s Erin Burnett on Monday confronted former Donald Trump aide Sam Nurnberg as he continued his whirlwind press tour following the announcement he will not be complying with a grand jury subpoena from special counsel Robert Mueller.

Nunberg told Burnett he’d been “a campaign advisor [for Trump] from 2011 to 2016, when everybody was laughing at Donald Trump,”—a claim that appears to counter the president’s own timeline of when he began eyeing a 2016 run.

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“You were campaign advisor from 2011?” Burnett asked. “He was thinking about running that long?”

“Yeah,” Nunberg said, before launching into a tirade against White House Press Secretary Sarah Huckabee Sanders—who Nunberg previously called a “fat slob.”

“I wasn’t planning on asking about this this early in the interview but you talked about her fat mouth, I want to ask you about this,” Burnett said. “It is important. You’ve done six interviews this the past four hours. ‘Bizarre’ was a word that some White House officials were using to describe some of your interviews. ‘Nuts’ is another one … Let me ask you this. You talked about her fat mouth. You called her a ‘fat slob’ in another interview. I reached out to a Trump ally.”

“This person told me, … ‘You’re drunk or off your meds.’ At least half a dozen other CNN reporters have received similar messages. Is this a hit job or is something wrong?” Burnett asked.

Nunberg replied he “really could care less what the Trump White House” has to say, citing the president’s approval rating and once again attacking Huckabee Sanders as “a terrible press officer.”

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“They can say whatever they want about me,” Nunberg said. “They have treated Roger [Stone] and me terribly. Terribly.”

Watch below: