Columbia, S.C. -- Sen. Joseph Biden, a Democratic presidential hopeful joining fellow Sen. Christopher Dodd at Martin Luther King Jr. holiday events, said Monday he thinks the Confederate flag should be kept off South Carolina's Statehouse grounds. "If I were a state legislator, I'd vote for it to move off the grounds — out of the state," the Delaware senator said before the civil rights group held a march and rally at the Statehouse here to support its boycott of the state. In Chicago, Sen. Barack Obama, also prominently mentioned in speculation about the White House sweepstakes in 2008, was...