President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE insisted Friday that he won’t watch 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 testimony before Congress next week.

Trump, who was asked directly if he would be watching the marathon testimony, also told reporters that Democrats need to “stop playing games,” and called the recent effort by Rep. Al Green Alexander (Al) N. GreenThe Memo: Trump's race tactics fall flat Trump administration ending support for 7 Texas testing sites as coronavirus cases spike The Hill's Coronavirus Report: Miami mayor worries about suicide and domestic violence rise; Trump-governor debate intensifies MORE (D-Texas) to force a vote on impeachment a “big waste of time.”

"As far as I’m concerned they already took their impeachment vote, and the impeachment vote was so lopsided, it was a massive victory,” Trump said, referring to a House vote earlier this week that quashed an impeachment resolution introduced by Green.

“And you know what, at some point they have to stop playing games, because they’re just playing games. No, I won’t be watching Mueller,” Trump said, speaking to reporters Friday afternoon as he departed the White House for a roundtable with supporters and fundraising event in New Jersey.

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Mueller is slated to testify for a combined five hours before the House Judiciary and Intelligence committees at back-to-back public hearings Wednesday.

Democrats hope the hearing will illuminate the details of Mueller’s 448-page report on Russian interference in the 2016 election, which provides an exhaustive account of the Trump campaign’s contacts with Russia and nearly a dozen potential episodes of obstruction of justice by Trump.

Some pro-impeachment Democrats hope the hearing will move the needle towards beginning impeachment proceedings against the president.

But House Speaker Nancy Pelosi Nancy PelosiPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Trump signs largely symbolic pre-existing conditions order amid lawsuit MORE (D-Calif.) has remained expressly against the possibility, noting lawmakers need to focus on their investigations and going to court as necessary to enforce subpoenas issued to the executive branch and other witnesses.

Mueller did not find sufficient evidence to charge members of the Trump campaign with conspiring with Russia to interfere in the investigation, though he wrote that the campaign expected to “benefit electorally from information stolen and released through Russian efforts." Trump and his Republican allies have cheered the result as vindicating him of allegations of “collusion” with Russia.

Mueller also did not reach a conclusion on whether Trump obstructed justice, and Democrats argue that the evidence laid out in the report would result in charges if he weren’t president. Attorney General William Barr Bill BarrHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Bipartisan representatives demand answers on expired surveillance programs YouTube to battle mail-in voting misinformation with info panel on videos MORE and then-Deputy Attorney General Rod Rosenstein Rod RosensteinDOJ kept investigators from completing probe of Trump ties to Russia: report Five takeaways from final Senate Intel Russia report FBI officials hid copies of Russia probe documents fearing Trump interference: book MORE reviewed the evidence and judged it insufficient to accuse Trump of criminal wrongdoing.

Trump has continued to attack the Mueller investigation as a “witch hunt” and excoriated Democrats in the House for what the president has termed an attempted “re-do” of the Russia probe.

Wednesday’s hearing is likely to dominate the airwaves as Democrats drill down on the more unsavory details about Trump’s conduct documented in the report, which many Americans have not read.

Brett Samuels contributed.