One of the Dixie Chicks is clarifying remarks she made about President George W. Bush during a concert in London earlier this week. Reporting on a Chicks' concert, the Web site for the United Kingdom paper The Guardian said singer Natalie Maines (pictured, center) told the crowd, "Just so you know, we're ashamed the president of the United States is from Texas." The singer's barb got the audience cheering, the Guardian said. In a statement on the Chicks' Web site Wednesday, Maines said, "We've been overseas for several weeks and have been reading and following the news accounts of our...