House Oversight Committee Chairman James Comer is probing former President Joe Biden’s White House. (AP Photo/Jacquelyn Martin, File and Anna Moneymaker/Getty Images)
A source familiar with the matter previously told Fox News Digital that lawyers for all five former staffers were in communication with the committee, but Comer signaled that he would not rule out compelling their appearance if those talks fell through.
"The House Oversight Committee is investigating the cover-up of President Biden’s mental decline and will be talking soon with a large group of former administration and campaign officials, under subpoena if necessary. We welcome the DOJ’s additional efforts to ensure accountability," Comer said.
The DOJ declined to comment when reached by Fox News Digital.
MIKE JOHNSON, DONALD TRUMP GET ‘BIG, 'BEAUTIFUL’ WIN AS BUDGET PASSES HOUSE
President Joe Biden's mental acuity was a topic of conversation in the final months of his term. (AP/Susan Walsh)
Biden is also currently dealing with stage 4 prostate cancer, which he announced last month, though he told reporters in recent days he was "optimistic."
CLICK HERE TO GET THE FOX NEWS APP
Like the DOJ, Comer's probe is focused on Biden's mental decline and use of autopen for pardons and other executive actions.
"The Committee on Oversight and Government Reform is investigating the role of former senior Biden White House officials in possibly usurping authority from former President Joe Biden and the ramifications of a White House staff intent on hiding his rapidly worsening mental and physical faculties," Comer said in letters to the former Biden officials.
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/exclusive-comer-hails-dojs-biden-probe-house-investigation-heats-up