Trump says Mueller 'must' stick to report's findings during testimony

President TrumpDonald John TrumpGraham to introduce resolution condemning House impeachment inquiry Support for impeachment inches up in poll Fox News's Bret Baier calls Trump's attacks on media 'a problem' MORE said Tuesday that former special counsel Robert MuellerRobert (Bob) Swan MuellerFox News legal analyst says Trump call with Ukraine leader could be 'more serious' than what Mueller 'dragged up' Lewandowski says Mueller report was 'very clear' in proving 'there was no obstruction,' despite having 'never' read it Fox's Cavuto roasts Trump over criticism of network MORE “must” stick to his report’s findings when he testifies to Congress about his probe into Russia's election interference and possible obstruction by Trump.

“Robert Mueller is being asked to testify yet again. He said he could only stick to the Report, & that is what he would and must do,” the president tweeted.

“After so much testimony & total transparency, this Witch Hunt must now end,” he continued. “No more Do Overs. No Collusion, No Obstruction. The Great Hoax is dead!”

Trump’s legal team said last week the White House is not planning to take any steps to block or limit Mueller’s testimony. Rather, the president’s tweet appears to be a warning shot to Mueller ahead of his July 17 appearance before Congress.

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The House Judiciary and Intelligence committee hearings will mark the first time the former special counsel is answering questions about the nearly two year investigation, creating a major public spectacle surrounding the probe that Trump’s team has sought to move past.

Trump’s lawyers have attempted to set limits around Mueller’s testimony, perhaps laying the groundwork for future attacks if he exceeds them. Trump's personal attorney Jay SekulowJay Alan SekulowMulvaney faces uncertain future after public gaffes The Hill's Morning Report — Trump's impeachment jeopardy deepens Mulvaney admission deals blow to White House impeachment defense MORE said on CNN last Wednesday that it “certainly would be inappropriate” for Mueller to offer a “new revelation” to lawmakers.

Mueller’s report detailed a widespread effort by the Russian government to interfere in the 2016 presidential election on Trump’s behalf. It also laid out 10 instances of possible obstruction of justice by Trump, but did not arrive at a conclusion about whether he violated the law.

Attorney General William BarrWilliam Pelham BarrBrennan's CIA a subject of Barr's review of Russia investigation: report Pelosi releases 'fact sheet' saying Trump has 'betrayed his oath of office' Federal prosecutors interviewed multiple FBI officials for Russia probe review: report MORE later decided not to press charges against the president.

Democratic lawmakers are expected to pepper Mueller with questions about his decision not to recommend charges against Trump, specifically his citation of a Justice Department policy stating a sitting president should not be indicted.

Updated 11:20 a.m.