Jackson received an email from Obama shortly after. The email is included in Jackson’s yet-to-be-released memoir titled “Holding the Line: A Lifetime of Defending Democracy and American Values.”
“I have made a point of not commenting on your service in my successor’s administration and have always spoken highly of you both in public and in private. You always served me and my family well, and I have considered you not only a fine doctor and service member but also a friend,” Obama said in the email.
Obama added: “That’s why I have to express my disappointment at the cheap shot you took at Joe Biden via Twitter. It was unprofessional and beneath the office that you once held. It was also disrespectful to me and the many friends you had in our administration. You were the personal physician to the President of the United States as well as an admiral in the U.S. Navy. I expect better, and I hope upon reflection that you will expect more of yourself in the future.”
Jackson’s office did not immediately respond to a CNN request for comment. Obama’s office declined to comment.