Was Joe Biden in 'cognitive decline'? Ex-White House physician to depose...

Dr Kevin O'Connor, an ex-White House physician who treated Joe Biden, is set to appear before a House committee which is investigating an alleged decline in the latter's cognitive abilities from when he was still the US president.

Also Read: Who is Dr. Kevin O'Connor, the doctor under fire for Joe Biden's cancer diagnosis?

O'Connor will depose before the House Oversight Committee on July 9, a source familiar with the panel’s schedule confirmed to NBC News. The physician agreed to come after he was summoned by the committee’s chairman, Republican representative James Comer, who is spearheading the probe into the alleged decline in Biden's mental fitness when he was still in office.

Comer is specifically focused on the Democrat's use of an autopen for official government business.

The Oversight Committee has also scheduled transcribed interviews with former aides in the Biden White House - Neera Tanden, Anthony Bernal, Ashley Williams and Annie Tomasini.

However, O'Connor could prove to be a key witness to prove allegations that Biden had "diminished capacity," and key decisions were being made by "people other than the .

Also, a memo by the Department of Justice in 2005 concluded that the use of the autopen was legal. Last year a federal appeals court ruled that “the absence of a writing is not a proof that a commutation did not occur,” when it relates to the use of a presidential autopen.

Biden himself has repeatedly insistent that he was the one making the decisions while in office. His former aides, too, have consistently rejected any claim that anyone other than the Democrat himself was in charge.

“Any accusation that President Biden was not making decisions is false. President Biden made the decisions about the pardons and the executive orders he issued, and the legislation he signed into law,” a former official, who was not authorized to speak on Biden’s behalf, said.