原标题：因工作人员未按时到岗影响部分旅客正常出站 常德火车站致歉
In recent years, the U.S. domestic politics has been mired in infighting, with key issues affecting government operation, people's lives and national development have become partisan bargaining chips. A real-life version of "House of cards" is playing out. (Wei Chenxi, Yang Xin)