President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE said Tuesday that he's completed his written answers to questions from special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's team, and that his lawyers are set to hand them over imminently.

"The written answers to the witch hunt that’s been going on forever — no collusion, no nothing — they’ve been finished. Finished them yesterday," Trump told reporters as he prepared to depart the White House for his Mar-a-Lago resort in Florida.

"The lawyers have them," he added. "I assume they’ll turn them in today, or soon."

Trump says his written answers for special counsel Robert Mueller have been completed, but his lawyers now have them. https://t.co/LIiM4ewGAU pic.twitter.com/NZ4CeTaFME — CBS News (@CBSNews) November 20, 2018

The president's responses to questions from Mueller mark a milestone in the Russia investigation.

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In a "Fox News Sunday" interview that aired this week, Trump said he "probably" won't sit for an interview with Mueller, despite previously stating publicly that he'd be willing to do so.

"I think we’ve wasted enough time on this witch hunt, and the answer is, probably, we’re finished," Trump told Chris Wallace Christopher (Chris) WallaceNearly 40 Democratic senators call for climate change questions in debates Webb: Political Reality Check The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November MORE.

The president has frequently decried the Russia investigation as a "witch hunt," and has maintained that his campaign did not collude with the Kremlin in 2016.

Mueller has thus far obtained guilty pleas from four former Trump associates and filed indictments against more than 20 Russian nationals.

Democrats have raised concerns that Mueller's status is in jeopardy after Trump appointed Matthew Whitaker as acting attorney general earlier this month. Whitaker has been critical of the special counsel and suggested in opinion pieces written before joining the government that the attorney general could stifle funding for the probe.

Trump said Sunday that he was unaware of Whitaker's criticism before naming him to the post, and that he believes Whitaker will "do what's right" when faced with decisions about the special counsel.