Sadly, I believe you are correct on all points.
Agreed.
Sadly, you are most likely correct. I recall when John Hinkley shot Ronald Reagan (along with a D.C. police officer and James Brady). Brady eventually died from his injuries.
I told someone at the time that there is no way a D.C. jury would convict an assassin of a Republican president. Of course, Hinkley was found not guilty by reason of insanity, and walks free today.