Sam Kass, chef to the Obamas, is leaving the White House

Sam Kass, a White House chef and leader of the first lady's healthy-eating campaign, is stepping down at the end of the month. Kass, who recently married, is moving to New York where his wife, television journalist Alex Wagner, lives. Kass's presence in Washington's social scene and long ties to the Obama family made him a high-profile figure during his six years here.