On July 9, 2025, at 9:36 AM MDT, Dr. Kevin O’Connor, Joe Biden’s former White House physician, invoked the Fifth Amendment during a House Oversight Committee deposition, refusing to answer questions about Biden’s health and mental fitness. The committee, led by Rep. James Comer, probed allegations of a cover-up regarding Biden’s cognitive decline, with O’Connor exiting by 10:31 AM MDT after pleading the Fifth to questions like whether he was told to lie about Biden’s health or believed Biden was unfit to serve. O’Connor’s legal team, David Schertler and Mark MacDougall, cited doctor-patient privilege and a Department of Justice (DOJ) investigation into Biden’s use of an autopen as reasons for his silence, arguing he risked self-incrimination. The deposition, lasting under an hour, saw O’Connor repeatedly invoke the Fifth, even on non-privileged questions.

The House Oversight Committee released a 20-minute video of the deposition on July 9, 2025, showing O’Connor’s refusal to answer.