It's at least possible that the Republicans will lose control of Congress, if not in this election, then in the next.
Repealing that damned law is high on my wish list. What's on yours?
Enforcing decent trial practice and treatment of prisoners is another and much harder problem. I'm not sure how all the prisoners held in secret can be found, let alone how they can be put into a more decent system in such a way that those currently imprisoning them aren't excessively tempted to just kill them and try to hide the evidence.