BALTIMORE - U.S. Senate candidate Kweisi Mfume said having a romantic relationship with a subordinate while heading the NAACP was a "boneheaded thing to do." Mfume, who is divorced, has previously admitted dating the woman in 1997 and adopting her son. But he denied that any of his personnel decisions were affected by the relationship. "I'm a human being," Mfume said Monday of the relationship. "It was very short-lived and terminated because I recognized it was a boneheaded thing to do. It was my mistake and my mistake solely. That's what makes us better as human beings. Not to repeat...