FROM CNN's Jack Cafferty: The First Lady is calling on America to get moving – in order to fight childhood obesity. Michelle Obama kicked off a national effort at the White House today to try to reverse the growing epidemic. [cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2010/images/02/09/art.michelle.obesity.jpg caption="First Lady Michelle Obama looks on as Pres. Obama signs a memorandum on … Continue reading Why have we allowed 1/3 of children to become overweight?