The Trump White House has waived executive privilege for key figures in the former Biden White House. (Getty Images)
"In light of the unique and extraordinary nature of the matters under investigation, President Trump has determined that an assertion of executive privilege is not in the national interest, and therefore is not justified, with respect to particular subjects within the purview of the House Oversight Committee," the letters said.
"Those subjects include your assessment of former President Biden's fitness for the office of the President and your knowledge of who exercised executive powers during his administration."
Both congressional Republicans and the White House are investigating whether those senior Biden aides played any role in keeping concerns about the elderly former president's mental acuity shielded from the public eye and even from lower-level White House staff.
It is not clear if any of the aforementioned former Biden aides planned to claim executive privilege in communications with the committee, but it is not unheard of for a new administration to waive it for investigations involving its predecessor.
Former Biden staff secretary Neera Tanden testified Tuesday. (Getty)
"I answered every question, was pleased to discuss my public service, and it was a thorough process, and I'm glad I answered everyone's question," Tanden also said.
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A source familiar with the matter told Fox News Digital that Tanden testified she had minimal interaction with Biden in her role as staff secretary.
"To obtain approval for autopen signatures, she would send decision memos to members of the President’s inner circle. She stated that she was not aware of what actions or approvals occurred between the time she sent the memo and the time she received it back with approval," the source said.
Bernal is set to sit down with Comer and investigators for his own testimony on Thursday.
Elizabeth Elkind is a politics reporter for Fox News Digital leading coverage of the House of Representatives. Previous digital bylines seen at Daily Mail and CBS News.
Follow on Twitter at @liz_elkind and send tips to elizabeth.elkind@fox.com
https://www.foxnews.com/politics/house-republicans-inch-closer-answers-former-biden-advisors-lose-executive-privilege-shield