Do you have concrete ideas on how to improve?
And till those steps are implemented, don't you think you would enjoy it, if the next president would pardon Snowden, or your personal favorite case of unjustice?
As if the laws and justice of a nation are a questions of personal favorites! Maybe I have read too much enlightenment philosophers, but I happen to think in terms of general principles in this case.
This might be a good first step, too. Read more books from a time when people were struggling with arbitrary justice.
So you don't have them. That's ok. And thank you, but I did read a lot of books. History, politically, .. I just apparently came to different conclusions, but it is ok for me to not take this deeper here.