United States Flag Code dictates where, when and how the flag should be displayed. To be in accordance with the code, when a flag is set to be flown at half-staff, it first must be raised to the top of the flagpole and then lowered, not simply moved to the halfway mark.
Following the death of principal government figures, including senators, representatives and governors, the president can order the flag to be flown at half-staff as a mark of respect for their memory. The length of time the flag remains at half-staff depends on the person’s title. The code states:
For members of Congress, which the Flag Code defines as a senator, representative, delegate or the resident commissioner from Puerto Rico, the flag is to be flown at half-staff on the day of death and the following day.
你以为美国总统每天像你一样闲着没事,连升降国旗也要去管?
参议员只能享受2天降国旗的待遇,现在Trump 已经把McCain的待遇提高了,你还想怎样?