I don't know any given reasons.I'm sincerely interested in a few examples from today..
I think the question is still very pertinent. Will the 43 senators who voted to acquit be vilified in history, or are there some good reasons (as I'm saying logical AND ethical), to cut these acquitters some slack?
But one could be belief in the unconstitutionality
of impeaching someone no longer in office.
Another could be belief that Trump's behavior
was reckless, & led to the sedition, but wasn't
his intention.