Biden doctor pleads the Fifth when asked if he was told to lie about president’s mental fitness – before slinking away from deposition –“This is unprecedented, and I think that this adds more fuel to the fire that there was a cover-up,” Comer declared. | 9 July 2025 | Joe Biden’s former doctor refused to answer a single question Wednesday about the ex-president’s health and cognitive decline — stunningly invoking his right against self-incrimination before slinking out of a congressional deposition. Dr. Kevin O’Connor is facing claims that he shielded the public from Biden’s decline while the 46th president was in office — and even covered up his powerful patient’s advanced-stage prostate cancer. “Dr. O’Connor pleaded the Fifth Amendment,” House Oversight Committee Chairman James Comer (R-Ky.) revealed after the doctor’s swift departure. According to Comer, O’Connor, Biden’s longtime personal physician, was asked two key questions: “Were you ever told to lie about the president’s health?” and “Did you ever believe President [sic] Biden was unfit to execute his duties?” In both instances, O’Connor took the Fifth.