Former President Joe Biden's mental acuity is in the House GOP spotlight (AP Photo/Alex Brandon)
In addition to whether senior aides covered up Biden's alleged decline, House Oversight Committee Chairman James Comer, R-Ky., is looking into whether any presidential orders were signed via autopen without the former commander in chief's knowledge.
Any allegations of wrongdoing so far have been denied by the ex-president's allies.
'PRESIDENTIAL INCAPACITY': SENATE REPUBLICAN SEEKS PAPER TRAIL OF BIDEN'S AUTOPEN USE
But Republican investigators have pointed to Biden's disastrous June 2024 debate and subsequent revelations in the media that there were more concerns from Biden's inner circle about his fitness for office than previously known.
Williams, however, argued he was in command of himself during that debate, the source said.
The former White House aide said nothing to reporters when entering or leaving the committee meeting room for her voluntary interview.
Fox News Digital reached out to Williams' lawyers for their account of events inside the room.
It was a staff-led meeting, but Rep. Jasmine Crockett, D-Texas, briefly stopped in for just under 30 minutes to show "solidarity" with the witness, the progressive told reporters afterward.
Rep. Jasmine Crockett, D-Texas, made a surprise appearance at the meeting. (Anna Moneymaker/Getty Images)
Williams ended her White House tenure as deputy assistant to the president, senior advisor to the president and director of strategic outreach, according to her LinkedIn page.
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Notably, the social media page also says Williams still works for the ex-leader as senior advisor in the Office of Former President Joe Biden.
She was subpoenaed by the House Oversight Committee last year during Republicans’ investigation into Biden’s cognitive health, but GOP investigators say the former White House blocked her from giving any information.
The Democratic staffer is the third person to appear before committee investigators in recent weeks.
Former Biden White House physician Kevin O'Connor appeared for a sworn deposition Wednesday after being subpoenaed by Comer.
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
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