Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Washington (CNN) Chelsea Clinton took to Twitter in defense of a fellow first child, Barron Trump, after an article criticized the President's youngest son's casual fashion choices. "The youngest Trump doesn't have any responsibilities as the president's son, but the least he could do is dress the part when he steps out in public," entertainment reporter Ford Springer wrote in the Daily Caller. The story prompted widespread rebukes from both sides of the political aisle and the media, including a sharp statement from Clinton, who knows firsthand the spotlight of a White House childhood. "It's high time the media & everyone leave Barron Trump alone & let him have the private childhood he deserves," she wrote, linking to the article.Barron Trump was the subject of an op-ed in the Daily CallerMany, including Chelsea Clinton, came to his defense 
 Question:When his father assumed office in January, then-10-year-old Barron Trump joined _ in the exclusive ranks of first children, a club rife with undue scrutiny for the children of Presidents.

Chelsea Clinton