The writer is not making the case out for ‘knowledge’. It’s a very high standard for culpability. They might believe it could possibly be used but trying to prove actual knowledge is difficult. In any event this lame duck president is on the way out. His legacy of being the worst and most divisive President will speak for itself.
You are joking, right? The president does not know the laws and are therefore exempt from responsibility? The president does not know about a deal he presents himself?