The Washington, DC, establishment absolutely loves itself. Every profession in the city is riddled with people who dine out on titles and past accomplishments, and will do so for the rest of their lives. “Right this way, Ambassador,” is muttered daily to someone who served for 20 minutes in an administration generations ago. They absolutely love it. So it’s no wonder Jill Biden felt the need to order people to refer to her as “doctor,” since she’s spent most her adult life in the shadow of people who pat themselves on the backs so hard over titles that you’d think...