Why is the press treating a wealthy, 35-year-old political operative like she's still a White House kid? When precisely did Chelsea Clinton complete her transition from a White House kid whom journalists agreed to treat as off-limits to a public figure deserving of the full scrutiny of the press corps? The unsettling answer to the question appears to be, “Not yet.†The soon-to-be 36-year-old occupies the status of an American princess—Diana on the Potomac, if you will. The press covers her, of course, attempting to ask her substantive question, but mostly she exists to grace the covers of magazines—Fast Company...