July 9 (UPI) -- Regarding President Joe Biden 's health, his doctor refused to testify Wednesday during a deposition with a House committee. Dr. Kevin O'Connor cited doctor-patient privilege and the Fifth Amendment, his lawyer said in a statement. "Earlier today, Dr. Kevin O'Connor asserted the physician-patient privilege, as well as his right under the Fifth Amendment to the U.S. Constitution, in declining to answer questions from the staff of the House Committee on Oversight and Government