This whole thing has definitely stemmed from bitterness. Both England and USA are hurt over not being chosen. England couldn't do much about it, as they have no real power, so they've had to wait for USA to do something about it. Sure, they've found out what we all know: FIFA is corrupt. But it's not to just expose them for the good of the world, it's because they weren't chosen. Both probably tried to bribe FIFA during bidding as well anyway.
This. But it extends beyond this into all politics.