Biden is departing Washington having given the fewest news conferences and media interviews of the last seven presidents.

In the clip, the 18-year-old can be seen grabbing the Democrat politician's hand before he leaned in and appeared to whisper something ... made his elusive remark, Biden's happy expression was ...

“Barron whispered something to Joe Biden and his face instantly ... While Trump did shake hands with Biden, he did not whisper a comment to the now-former president. The original video ...