The White House may try to use executive privilege to keep parts of 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 final report from being made public, Bloomberg News reported Monday, citing unidentified sources.

President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE's personal lawyer Rudy Giuliani told the news outlet that Trump's legal team "will look at it and see if the president thinks there is a valid claim" of executive privilege.

"We reserve the right. We don’t know if we have to, but we haven’t waived it," Giuliani added.

Rep. Jerrold Nadler (D-N.Y.), the new chairman of the House Judiciary Committee, told Bloomberg News that an effort to conceal Mueller's report “will not hold up in court."

He added that an executive privilege claim "can always be pierced by a specific and legitimate criminal or congressional inquiry.”

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Mueller is investigating Russian interference in the 2016 presidential election and possible collusion between the Trump campaign and Moscow. His report could be issued as soon as next month, Bloomberg News reported.

Mueller will be required to issue his report to the Department of Justice. Acting Attorney General Matthew Whitaker and Trump's nominee to serve as the next attorney general, William Barr, have each previously criticized the investigation.

Trump has long dismissed it as a politically motivated "witch hunt."

Democrats have previously vowed to publicize the findings of Mueller's final report, despite what Trump tries to do.

Rep. Adam Schiff Adam Bennett SchiffOvernight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies Intelligence chief says Congress will get some in-person election security briefings Democrats, advocates seethe over Florida voting rights ruling MORE (D-Calif.), chairman of the House Intelligence Committee, said last month that Democrats would subpoena the report if Trump tries to use executive privilege to keep it from being made public.

“I'm prepared to make sure we do everything possible so that the public has the advantage of as much of the information as it can,” Schiff said at the time.