The House Oversight Committee completed another deposition of a former Biden aide in its investigation into allegations of a cover-up of the former president's mental acuity.

Dr. Kevin O'Connor invoked doctor-client privilege and his rights under the Fifth Amendment during an appearance Wednesday before the House Oversight Committee, his attorneys said.

Joe Biden’s White House doctor’s uncooperativeness in a House probe looking into the former president’s fitness to serve has led the Republican congressman overseeing the investigation to allege a “coverup” of Biden’s “cognitive decline.”