Because they ALL have nasty skeletons in their closet from their bare-knuckled climbs to power.
Could be. It would make sense.
But even people without skeletons can have “evidence” planted on their computer. Or can have their family threatened. Vault 7 showed the wide range of criminal capabilities the CIA has amassed for itself.
I’m sure some people like the benefits of being in the CIA’s “club”. But I suspect that many would be really thankful if we could get them out from underneath the thugs.