Tempers flared at the White House during a meeting earlier this week between 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 and his advisers on the upcoming 2018 midterm elections, according to a report from The Washington Post.

The president's former campaign manager, Corey Lewandowski Corey R. LewandowskiHow Trump can win reelection: Focus on Democrats, not himself Trump Jr. distances from Bannon group, says he attended 'single' event Bannon, three others charged with defrauding donors of 'We Build The Wall' campaign MORE, reportedly vented about the White House's management of the Republican Party, as well as the upcoming midterm elections during the meeting on Wednesday.

The Post reports that Lewandowski told Trump the Republican National Committee (RNC) was not doing enough to support the president's agenda and was not raising enough money.

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The RNC announced it had raised $8.2 million last month, breaking its record for the amount of money raised during a November in a non-election year.

Lewandowski also reportedly voiced more personal grievances to Trump, saying “he wasn’t being served well,” sources told the publication.

Lewandowski said his calls were not being returned by the White House and that he was being blocked by the president's assistant through Kelly.

After Trump listened to Lewandowski's concerns, the former campaign manager reportedly held a "very intense" conversation with political director Bill Stepien, where Lewandowski reportedly questioned the director's performance.

The publication reported that attendees of the meeting included the president, Stepien, Lewandowski, White House chief of staff John Kelly John Francis KellyMORE, communications director Hope Hicks Hope Charlotte HicksSenate intel leaders said Trump associates may have presented misleading testimony during Russia probe: report Cuomo turned down Trump invitation to participate in April press briefing: report Trump shakes up White House communications team MORE, counselor Kellyanne Conway Kellyanne Elizabeth ConwaySpecial counsel investigating DeVos for potential Hatch Act violation: report George and Kellyanne Conway honor Ginsburg Trump carries on with rally, unaware of Ginsburg's death MORE and data specialist Brad Parscale.

The Hill has reached out to the White House for comment.

The report comes as Politico reported that Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellFEC flags McConnell campaign over suspected accounting errors Poll: 59 percent think president elected in November should name next Supreme Court justice Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' MORE (R-Ky.) has been saying behind closed doors that the GOP could lose the House and the Senate in next year's midterms.

The GOP holds a slim majority in both the House and Senate. The president has reportedly told those around him that he plans to campaign aggressively for Republicans in 2018.