Joe Biden's physician refused to answer questions during a closed-door deposition in House Republicans' probe of his mental acuity as president.

The House Oversight Committee will bring in four more ex-White House aides for questioning about the alleged cover-up of Biden’s mental decline

The House Oversight Committee questioned former Biden aide Neera Tanden about presidential autopen signatures and Biden's mental fitness during a five-hour closed-door session.

Former President Joe Biden's White House physician declined to answer questions before a House Committee as the GOP-led panel ramped up its investigation into Biden's age and health.

Republicans want to uncover who had the authority in the Biden White House to authorize executive orders and pardons with the president’s signature

Rep. Jasmine Crockett, D-Texas, said she had zero concerns about former President Joe Biden’s mental acuity while he was in the White House. Crockett was the only other lawmaker besides House Oversight Committee Chair James Comer, R-Ky., in the closed-door interview with former White House physician Kevin O’Connor on Wednesday morning.

Kevin O’Connor, who served as President Biden’s physician during his White House term, asked the House Oversight and Government Reform Committee on Saturday to postpone his scheduled testimony