You were the 22 WHCS in history, According to Wikipedia, and I hope they're right, WHCS's responsibilities vary greatly from administration to administration.

你是第22位白宫办公室主任，根据维基百科，我希望数据正确吧，白宫办公厅主任的任务,每届都有所不同。

普林斯顿公开课 - 国际座谈会课程节选