While the two men had been scheduled to take part in an open session of the committee dealing at a hearing on "Attempts to Influence U.S. Elections: Lessons Learned from Current and Prior Administrations", they have since negotiated instead to provide documents and speak in private.
Manafort on Tuesday met with investigators from the Senate Intelligence Committee - which is conducting one of four major investigations into Trump's ties to Russia - to discuss that Trump Tower meeting and his previous work on behalf of Russian interests.
White House senior adviser Jared Kushner, center, and his attorney Abbe Lowell, right, depart Capitol Hill in Washington, Monday, July 24, 2017, after a closed-door interview with Senate Intelligence Committee investigat.
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They said Manafort was willing to provide only a single transcribed interview to Congress, which would be available to the Judiciary Committee as well as other panels.
Three members of Donald Trump's inner circle face congressional investigators this week, and with the president talking about pardons for his family and warning Special Counsel Robert Mueller not to probe to deeply, the stakes could hardly be higher. The meeting was pitched to him as a Russian government effort to help his father win the election, and a publicist promised the lawyer would have damaging information on Hillary Clinton.
Unlike Kushner and Trump, Jr., who have both hidden behind their political inexperience by claiming that they attended the meeting without vetting or exploring the motivations of the people involved, Manafort can make no such pretense.
Republican Sen. Chuck Grassley and Democratic Sen.
Grassley and Feinstein wrote that the committee "may be willing to excuse [Manafort] from Wednesday's hearing if he would be willing to agree to production of documents and a transcribed interview". "Nothing else occurred", the statement said.