Are you now, or have you ever been, a shill for Coca-Cola? A conservative think tank denounced Tuesday a nutritional advocacy group for its attacks on Olympic figure skater legend Michelle Kwan for being a pusher of soft drinks while sitting on President Obama’s fitness council, while the group doubled down on its position. The Center for Science in the Public Interest (CSPI) had said Miss Kwan’s dual roles as a Coca-Cola “ambassador” to the Olympic Games in Sochi, Russia, and her membership on the Council on Fitness, Sports, and Nutrition were “unacceptable.” It “cannot be reconciled, since Coca-Cola and...