The official launch of Michelle Obama's major anti-obesity initiative was obscured by her husband's surprise press conference and the threat of another major snowstorm in Washington. That's unfortunate, because never before has the government promised to devote as much time and money to the childhood obesity epidemic. To get a sense of what the roots of the initiative look like, and what Mrs. Obama's objectives are, I spoke Tuesday afternoon with Susan Sher, the First Lady's chief of staff. My questions are edited for brevity; her answers are included in their entirety.

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