Michael Kinsley - Sins of the Father - washingtonpost.com:

"They are now independent moral actors, and their situation requires that they either publicly oppose their father's war or do something to support it. "

I do not agree with Kinsley because they are doing what their Dad did when Jim Webb was fighting in SE Asia. I doubt that either has really though about their father's policies, although you'd hope that as America's Best and Brightest (untold opportunities, wealth, connections, elite educations) they'd be thoughtful about something more than partying.