Trump campaign chairman Paul Manafort walks around the convention floor before the opening session of the Republican National Convention in Cleveland. Hillary Clinton's campaign is questioning Donald Trump's top political aide's ties to a pro-Kremlin political party in Ukraine, claiming it is evidence of the Republican nominee's cozy relationship with Russia. The New York Times reported that handwritten ledgers found in Ukraine show $12.7 million in undisclosed payments to Paul Manafort from the pro-Russia party founded by the country's former president Viktor Yanukovych.
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Trump campaign chairman Paul Manafort walks around the convention floor before the opening session of the Republican National Convention in Cleveland. Hillary Clinton's campaign is questioning Donald Trump's top political aide's ties to a pro-Kremlin political party in Ukraine, claiming it is evidence of the Republican nominee's cozy relationship with Russia. The New York Times reported that handwritten ledgers found in Ukraine show $12.7 million in undisclosed payments to Paul Manafort from the pro-Russia party founded by the country's former president Viktor Yanukovych.
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Story highlights

Donald Trump said that he accepted Friday the resignation of his campaign chairman

Paul Manafort is one of several high-profile departures from the campaign this summer

(CNN) —  

Donald Trump’s campaign chairman Paul Manafort has resigned from his position on the campaign, the Republican presidential nominee said in a statement Friday.

“This morning Paul Manafort offered, and I accepted, his resignation from the campaign,” Trump said. “I am very appreciative for his great work in helping to get us where we are today, and in particular his work guiding us through the delegate and convention process. Paul is a true professional and I wish him the greatest success.”

With just under three months to go until Election Day, Manafort’s departure reflects the shifting power centers on the Trump campaign: After consolidating influence and discarding with Trump’s campaign manager Corey Lewandowski, Manafort has now found himself on the outs after Trump elevated two different aides to senior positions on Tuesday: Breitbart News chief Steve Bannon as campaign CEO and Kellyanne Conway as campaign manager.

It’s the second high profile departure from the top of Trump’s campaign structure after campaign manager Corey Lewandowski left the operation earlier this summer. A new campaign manager and executive were named earlier this week.

Campaign reboot: Trump expresses regret for saying ‘the wrong thing,’ doesn’t specify

A Trump source said Manafort told Trump he was becoming a distraction and he wanted to end that. A senior Trump campaign aide added later Friday that Trump lost faith in Manafort a couple of weeks ago, feeling like Manafort wasn’t quick enough with answers to his questions, instead offering to look into an issue or get him a report on it. Trump doesn’t want people around him who he thinks are moving too slowly, the aide said.

“Trump and he don’t have chemistry,” the aide said.

A friend of Manafort’s told CNN Saturday that he wasn’t going to take orders or relinquish power to Conway or Bannon. The friend added that’s not a knock on either of them, but just “how (Manafort) rolls.”

Questions over Manafort’s business past

The departure also comes as Manafort is defending himself from investigations into his extensive lobbying history overseas, particularly in the Ukraine, where he represented pro-Russian interests. Manafort has been beating back reports from multiple media outlets in recent days over his ethics, which have been egged on by a Clinton campaign eager to highlight Trump’s ties to the Kremlin.

A pair of Republican congressman have also called for investigations into Manafort’s business past.

“I want to know what money he got from a pro-Russian organization in the Ukraine,” Rep. Sean Duffy of Wisconsin told CNN’s Chris Cuomo on Tuesday.

“I think Donald Trump ought to really investigate this and where his chief adviser, what his association with the Russians are,” Rep. Adam Kinzinger of Illinois told CNN’s Jake Tapper earlier this week.

Trump and his running mate Mike Pence were in Baton Rouge, Louisiana, Friday morning, touring flood damage and meeting with residents there.

Manafort, a longtime Washington fixture, was originally brought on in the spring to save Trump from a defeat at the Republican convention should Trump have failed to win enough delegates to clinch a first-ballot nomination. Yet his role grew to serve as Trump’s connection to the GOP establishment, telling Republican elders that their presidential nominee would run a traditional campaign that would not imperil down-ballot candidates.

RELATED: Donald Trump’s shakeup gamble

After warring behind the scenes for months with Lewandowski, who had little regard for Manafort, Lewandoswki was fired earlier this summer. That decision by Trump seemed to be an embrace of Manafort’s strategy.

Manafort installed many of his associates in the upper echelons of the campaign, signaled his support for an allied super PAC and crushed attempts to embarrass Trump at the Republican convention in Cleveland.