Is there any direct, actionable evidence that individual CEO's willingly were involved with illegal activity related to the 2008 finance crisis? Most of what happened at the time was not technically illegal thus a large complex system with many participants makes prosecuting people very hard.
Not obviously. I made another comment upthread to the same effect - between the changes in the regulatory environment and the complexity of financial institutions, it's incredibly hard to prove criminal intent. I don't know what can be done about this - require all board meetings to be recorded? Introduce concepts of strict liability for financial mismanagement involving losses above a certain threshold?