Kawakita wasn't pardoned, but he was released by Kennedy before the sentence (death) was carried out. Back to Japan. Almost as good as a pardon, but not one.
Tokyo Rose refused the Japanese demand to give up her American citizenship as well as to broadcast anything bad about America.
I had the impression that many troops looked forward to her daily 2 to 3 minute broadcasts as she was funny and entertaining.
The DOD judged that her effect was “innocuous”.