CREDIBILITY CONCERNS: The Justice Department’s election-law investigation of former D.C. Mayor Vincent Gray was “delayed, and possibly aborted, because of concerns about Jeffrey E. Thompson’s credibility, recent interviews and new records show,” The Washington Post reports. Gray, represented by Hogan Lovells’ Robert Bennett, was not charged in the investigation, which ensnared several local officials for their roles in an illegal “shadow campaign” that boosted Gray.