It was the youngest, Barron, who caught the eye of onlookers. He was seen politely offering a handshake to then-outgoing President Joe Biden and former Vice President Kamala Harris after his father was sworn in.

Lip reader Jeremy Freeman noted that the 18-year-old greeted Mr. Biden with a cordial “G’day to you, sir,” then turned to Kamala Harris and said, “Ma’am, good day.”

A video of Barron’s respectful gesture caused a stir on X (formerly Twitter), as reported by the Irish Star, with many applauding his “class.”