NASHUA, N.H. -- Howard Dean said Wednesday he regretted the pain he caused by saying that the Democratic Party must court Southerners who display the symbol of the Confederacy in their pickup trucks. Speaking in New York about campaign finance, the former Vermont governor sought to quell the dispute that erupted over his recent comment and his unwillingness to apologize for it during Tuesday night's debate. "I regret the pain that I have caused, but I will tell you there is no easy way to do this and there will be pain as we discuss it and we must face...