A few months after Sen. Claire McCaskill was entwined in a scandal over the use of her personal plane for campaign travel, the Missouri Democrat has released amended campaign finance reports dating back to 2006.According to the new filings with the Federal Elections Commission, McCaskill’s campaign committee had failed to account for 143 contributions in the ‘06 cycle, totaling nearly $277,000. The committee also missed about $277,000 in disbursements. During that cycle, McCaskill raised $11.5 million.The discrepancies, her campaign said, could be attributed to the fact that donations were coming in at a furious clip at the end of the...