What was the most difficult day for you as Chief of Staff and the most joyous day, and the toughest assignment President Bush gave you?

作为白宫办公厅主任,最艰难的一天是哪天,最高兴的又是哪天，还有布什总统派给你的,最难的任务是什么？

普林斯顿公开课 - 国际座谈会课程节选