Is there really a crisis of childhood obesity?

http://www.tnr.com/article/politics/childhood-shmomesity

Michelle Obama has declared "war" on childhood obesity, but is there really a big crisis? Paul Campos, a professor of law at the University of Colorado, argues there is no crisis, just a campaign against fat kids.
I agree that if Mrs. Obama's approach to the "problem" of her overweight child worked, there would be NO FAT KIDS! She referred to her daughter's weight (she's chubby)in public, which is a set up for eating disorders. Her approach to changing TV habits and her kids' diets speaks to a desire to improve their health, which, Dr. Campos argues, can do so, but why link this to their weight??