I wonder. Do you think the reason he didn't pardon Snowden is practical or ideological. Practical in the sense that it would undermine the deterrent in divulging classified material, because Snowden hasn't been seen to be punished, rather he lives the life of an international celeb, often quoted and often asked on security matters, or ideological in that he broke the cardinal rule of the intelligence community and that the feeling is that the act itself was wrong. That he betrayed 'Murica as it were.