A dramatic scene recently took place in United States politics: the country's former and incumbent presidents have simultaneously fallen into cases of classified documents. Their scandals over handling classified documents have been used as a tool for partisan struggle, which refreshed the international community's awareness of how bottomless the US politics is.

After US media outlets reported that some classified documents including US intelligence memos from Joe Biden's time as vice president were found in a private office, the GOP, which just took control of the House, has seized the opportunity to launch political revenge against Biden and his Democrats.