The Chicks' transgressions aren't easy to explain, and I don't expect they'll ever be forgiven (unless they somehow have a complete change of heart and show that they understand that what they did was wrong).
At the last CMT Flameworthy Award show, the Chicks' name was loudly booed - while the audience had no trouble cheering and accepting Sheryl Crow, who's been a *much* more vocal critic of Bush and the war. I can understand why, but it's hard to explain.