Even funnier if he's still a true believer in the US even as he's uncovering more and more shit. Finds out cops are working with white supremacists to silence black protesters? Well, the issue is just a few bad apples, not the whole system. Exposes Lex Luthor's bribery of courts and politicians to cover up his death squads killing protesting overseas workers? That's just one rich guy, not indicative of capitalism at all. Discovers the CIA running a drug ring to experiment new mind control drugs? Surely it's just rogue agents and not the whole CIA.
Top it off by him finding out, point-blank, that the CIA is trying to kill him for exposing the corruption and lies of the US, and Clark still not understanding that the US is the problem. Have Waller herself be the antagonist, getting frustrated trying to get it through his head that he's upholding a system totally opposed to his overly idealistic vision, but Clark just can't grasp it.