maxleod: Also, I don't trust the results of the investigations, the presidents can lie (and here, I think they did).
What you trust doesn't matter here. The fact remains that joppo investigated dedo, so whether fascist or liberal, he's going to know dedo's alignment.
It would make no sense for him, whether fascist or liberal, to go for anyone else. Compare with Cadaver who was (rightly) criticised for investigating joppo and then not going straight for his government.
Regardless of what you believe joppo's alignment is, him chosing dedo is the obvious move to make. You criticising the choice for "They've been playing as a team from the beginning" makes no sense.