Former Illinois Representative Jesse Jackson Jr., once one of the most promising black politicians in the United States, reported to federal prison on Monday to begin serving a 2-1/2 year sentence for misusing campaign funds, according to a family spokeswoman. Jackson, a former Democratic representative and the son of civil rights leader the Reverend Jesse Jackson Sr., entered a federal correctional facility in Butner, North Carolina, family spokeswoman Bunnie Jackson-Ransom said in a statement. "I am happy to report that he is in good spirits, all things considered," said North Carolina Representative G.K. Butterfield, who accompanied Jackson to the prison,...