Sen. John Edwards is drawing a curtain on his U.S. Senate career this week with a tour of the state. He's billed it as a chance to thank Tar Heels and let them know "how honored I was to represent them." It seems a little curious. While Edwards made an earnest run at national office, conventional wisdom suggests that he might have fared better on the national scene than he did had he opted to seek re-election from North Carolina. Edwards is one of the state's best and brightest. He's a very successful lawyer and a gifted politician. His fiery...