Not only is it appropriate. It's their obligation. They're the ones who put themselves on the line. The ones risking their lives. They're the ones actually trying to keep the invaders out. Not Bush or the Senate
They have credibility, regardless of the fact that they belong to a union.
I think its funny that when someone criticises Bush on an issue that FReepers agree with, they're labeled RINO, traitor, etc...
When someone criticizes Bush on something that FReepers don't agree with, they are doing their obligation.