Second Family of the United States
The Second Family of the United States is the family of the Vice President of the United States, who is second highest executive officer of the federal government of the United States. Members of the second family consist of the vice president, the Second Lady or Gentleman of the United States, and any of their children. However, other close relatives of the vice president and second spouse, such as parents, grandchildren, stepchildren, and in-laws etc, may be classified as members of the second family if they reside in the Number One Observatory Circle.
In the United States, the term "second family" in casual reference to the vice president's immediate family, is most often used by the media. Individually, each member of the second family is designated a Secret Service codename by the United States Secret Service. Used by special agents, these code names uniquely identify members of the second family for their ongoing protection as well as for the sake of brevity, clarity and tradition.