The sergeant-in-arms warning Republicans they will be in prison if they do not sit and listen to Schiff for 12 more hours. https://www.dailymail.co.uk/news/article-7921779/Adam-Schiff-rebukes-senators-walking-Democrats-case-removing-Trump.html  "Schiff made reference to the strict mandatory attendance requirement at the start of his remarks, after public commentary about senators excusing themselves and standing inside the chamber despite rules." "As he spoke, senators made their way to their seats – a common practice during ordinary session but not during the strict confines of impeachment." "'I'm not sure the chief justice is fully aware of just how rare it is, how extraordinary it is for the House members to be able to command the attention of senators sitting silently for hours or even for minutes, for that matter. Of course, it doesn't hurt that the morning starts out every day with the sergeant-in-arms warning you that if you don't, you will be in prison,' Schiff said as he opened the second day of Democrats' arguments in the case against Trump." Will their 'imprisonment' in the chamber listening to Schiff speak for 12 more hours, count?