"Biden told Letterman he got arrested at 21 for breaching chamber at US Capitol, sitting in lawmaker's seat...“In those days, no guards stopping you everywhere. ..

"Biden told Letterman he got arrested at 21 for breaching chamber at US Capitol, sitting in lawmaker's seat..."In those days, no guards stopping you everywhere. And they just got out of session. I walked in the back, all of a sudden I found myself in the chamber. I was stunned. I walked up, sat down in the presiding officer's seat, guy grabbed by the shoulder, said: 'you're under arrest,'" Biden told Letterman."

https://www.bizpacreview.com/2021/02/22/biden-told-letterman-he-got-arrested-at-21-for-breaching-chamber-at-us-capitol-sitting-in-vp-chair-1033322/