Well, most of us don't get to say anything to George W. Bush's face. In fact, he's pretty famous for insulating himself from all opposition.
Perhaps the Chicks just didn't get your memo on territorial appropriateness, on precisely what may be said at each moment in each venue.
And if they didn't repeat that precise sentence, they have said similar things in many venues, here and abroad. In fact they are still saying such things, despite paying dearly for being right about the war. If you think they were cowards 3 years ago, you must think they are heroes today.
The fact that everyone speaking against the Chicks seems to go through mental gymnastics trying to characterize the Chicks' "crime," argues strongly that some other factor is involved. So does that fact that so many are still nursing this grudge after 3 years.