U.S. first lady Michelle Obama talks with assistant White House chef Sam Kass (L) during a taping of the TV cooking show “Top Chef” in Dallas, Texas February 10, 2012. During the contest on the show, children paired up with top chefs to prepare low-cost, healthy school lunches. The first lady is on a three-day trip to mark the two-year anniversary of her “Let’s Move” initiative. REUTERS/Kevin Lamarque (UNITED STATES – Tags: HEALTH EDUCATION FOOD SOCIETY POLITICS ENTERTAINMENT)