"This is no different than removing the line "the American Way" from Superman Returns"
Brian Singer in the DVD interview for Returns noted that Superman was now a global franchise and could not be for the American Way any longer. THAT ticked me off so much, it was the killing note in why WB has been failing with the franchise.
The comic tried to take a more logical stance of the US was loosing focus on the American Way, which is why he dropped his citizenship. I can't say I disagree with the message American has lost its focus, but it is out of character for Superman to give up or not point out such by trying to influence more directly the core issue to change. He would be putting effort to champion the Administrations foolish tact and direction.
The comic writers took the easy way out and did a knee jerk plot line that again just does not fit Superman's character. Too bad as it showed they had some thinking on the plot but did not know the character it rotates around.