What are other countries doing to improve their criminal justice systems?
Canada is the first country in the world to have "innocence commissions".
What they do is truly marvellous. They will perform a post-mortem on the
case of a man who was wrongly convicted and find out what went wrong and
what they can do to reduce the likelihood of it happening again in the
future. That is what you do in science, that's what you do in medicine,
that's what you do in every other institution where life or liberty is at
stake. We don't do it in the US when it comes to criminal justice, and that
is appalling.
Justice is not perceived as a service rendered to paying customers. Misbehaving policemen, prosecutors and judges have legal armors that makes it nigh-impossible to punish.