Childhood obesity isn't some simple, discrete issue. There's no one cause we can pinpoint. There's no one program we can fund to make it go away. Rather, it's an issue that touches on every aspect of how we live and how we work.

What I admire most about Hillary is that she never buckles under pressure. She never takes the easy way out. And Hillary Clinton has never quit on anything in her life.

Oh, I can't play soccer, and I'm not a great swimmer. I won't drown, but you won't see me doing laps in a pool.

I worked with Congress on legislation, gave speeches to CEOs, military generals and Hollywood executives. But I also worked to ensure that my efforts would resonate with kids and families - and that meant doing things in a creative and unconventional way. So, yeah, I planted a garden and hula-hooped on the White House lawn with kids.

Elections aren't just about who votes but who doesn't vote.

My experiences at Princeton have made me far more aware of my 'blackness' than ever before. I have found that at Princeton, no matter how liberal and open-minded some of my white professors and classmates try to be toward me, I sometimes feel like a visitor on campus; as if I really don't belong.