Jared Kushner, Donald Trump Jr and former Trump campaign manager Paul Manafort are to testify before the US Senate Judiciary Committee in relation to a meeting with a Russian lawyer who promised to provide incriminating information about Hillary Clinton.
The meeting has come under intense scrutiny as part of investigations into Russian interference in the 2016 US election and possible collusion on the part of the Trump campaign.
Mr Trump Jr and Mr Manafort are to appear in front of the committee on July 26, but Mr Kushner is due to appear on July 24 in a closed session.
Mr Kushner’s lawyer Abbe Lowell said his client is voluntarily cooperating with the congressional probes into the now notorious meeting.
In addition, Natalia Veselnitskaya, the Russian lawyer who organised the meeting with Mr Trump Jr, has also said she would be happy to testify.
Senator Sheldon Whitehouse, a Democratic member of the Judiciary Committee, said the hearing would enable the panel to begin to get testimony under oath.
“There has been an enormous amount that has been said publicly but it’s not under oath, which means that people are free to omit matters or lie with relative impunity,” Mr Whitehouse told CNN.
California Representative Adam Schiff says the committee will be asking asking those who attended the meeting for “testimony and documents.”
He said he wants to hear from everyone in the meeting, including Ms Veselnitskaya. She earlier told Kremlin-funded RT television outlet that she is ready to testify before the Senate.
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Both the House and Senate intelligence panels are investigating Russian meddling in the US election.