Natalie Maines has always been the Dixie Chicks' mouth. As lead singer, she not only fronts the band on stage but is often its spokeswoman. She was known for speaking her mind well before the now infamous comment that started a backlash against the popular country music group. Back in 2003 at a London concert on the eve of the Iraq war, Maines was just being herself when she said: "Just so you know, we're ashamed the president of the United States is from Texas." The reaction that followed stunned Maines and bandmates Martie Maguire and Emily Robison. Suddenly, the...