Let's be clear. During the campaign, Candidate Trump routinely charged that the election outcome would be "rigged." Mr. Obama's measured response to the alleged Russian intrusion was not to serve the ends of any particular candidate but instead to preserve the integrity of our electoral system and to assure the public's faith in the same. It is now up to Mr. Trump's Justice Department to investigate the matter and take appropriate action, providing that action is executed with competency and without the meddling triggered by external political calculations.