Manning was also being mistreated in prison, and that mistreatment would be very likely to get worse under a Trump administration. If Clinton won, a commutation

Manning was also being mistreated in prison, and that mistreatment would be very likely to get worse under a Trump administration. If Clinton won, a commutation would have been much less likely. It's worth repeating that while Obama commuted her sentence, he didn't pardon her. What he did was say "she's been punished enough", and it's entirely consistent to say that Manning has been punished enough but Snowden hasn't.