More on Barack ObamaSam Kass, a private chef for the Obamas while they were living in Chicago, is now working in the White House. A spokeswoman for Michelle Obama, Katie McCormick Lelyveld, said Mr. Kass will not be the only cook preparing the family's meals, but "he knows what they like and he happens to have a particular interest in healthy food and local food." He will work alongside the White House executive chef, Cristeta Comerford, who was promoted to that job by the Bushes and is being kept on in that role by the Obamas.