Republican presidential contenders Chris Christie and Mike Huckabee support Michelle Obama's anti-childhood obesity campaign, unlike Sarah Palin. Why? Christie, the New Jersey governor, says he's struggled with his weight for 30 years. Huckabee lost 100 lbs before running for president in 2008. Maybe thin mean girl Sarah Palin just doesn't know what it's like?

Some conservatives have criticized Obama's healthy eating campaign as government intrusion, or hypocrisy. Sarah Palin has attacked the agenda multiple times--boasting of bringing cookies to an elementary school where she was speaking and, on her reality show Sarah Palin's Alaska, getting in a dig at the first lady while announcing she was making s'mores for her kids. So why aren't Christie and Huckabee joining in?

Well, on Sunday, Huckabee said on Fox News that the first lady was spotlighting a serious problem in America. Separately, Christie said on Face the Nation that it was "a really good goal to encourage kids to eat better ... You know, I've struggled with my weight for 30 years, and it's a struggle. And if a kid can avoid that in his adult years or her adult years, more power to them, and I think the first lady's speaking out well." Christie, to give you some background, kick-started the conservative meme "Man up!" in 2009, when he told his opponent to "Man up and say I'm fat." Christie predicted he'd be a "big fat winner" on Election Day. He's clearly got no problem with some frank talk on the subject.