But Comey's participation in the June 8 hearing could be blocked if the Trump administration decides to invoke executive privilege to muzzle him.
The Senate Intelligence Committee is now investigating the possible connections between senior figures from the Trump campaign and Russian Federation during the election, including former national security adviser Michael Flynn.
Mr Comey has apparently spoken privately with Special Counsel Robert Mueller to work out the parameters for his testimony to ensure there are no legal entanglements as a result of his public account, CNN said.
The source added that Comey will "continue to make himself available" to Mueller and other investigators following his new testimony.
And while the White House is taking steps to insulate itself from the fallout, Trump's counterpunch instincts and addiction to social media promise a battle between two unpredictable titans.
Rajinikanth's fans come out to streets
Rajinikanth's statements during a recent meet-and-greet with fans fuelled a years-long buzz about his debut in electoral politics. But now, he recently played a cricket match in the U.S. but I skipped watching it because his time is over.
Lee said he hasn't personally seen Comey's memos related to Trump's reported requests to the former FBI director to end the investigation into Flynn. Thus, Trump's ability to block Comey isn't guaranteed. Still, the potential political fallout of hindering Comey, which Trump can ill afford following what's been labeled a poor first meeting with European leaders in May, as well as the failure to fully enact his immigration ban or pass a replacement for Obamacare, could only deepen the president's woes.
Besides Kushner, other Trump aides and advisers are also in the spotlight. He said the unmasking subpoenas are not part of the Russian Federation probe.
"So now it is reported that the Democrats, who have excoriated Carter Page about Russian Federation, don't want him to testify", Trump tweeted yesterday morning.
White House press secretary Sean Spicer referred questions about Comey's upcoming testimony to Trump's outside counsel while speaking to reporters on Wednesday.
The Guardian newspaper on Thursday said leading Brexit campaigner Nigel Farage was a "person of interest" in the Federal Bureau of Investigation probe but has not been accused of wrongdoing.