The feds are coming after Facebook. According to Bloomberg, the U.S. Federal Trade Commission is investigating whether the social media company "violated terms of a 2011 consent decree" when the Trump-linked firm Cambridge Analytica pulled the data of about 50 million people off the platform. Coming on the heels of reports that Russian agents used Facebook to influence the 2016 election, the Cambridge Analytica revelations have sent Facebook's stock tumbling and its chief information security officer heading for the door. The intervention by the federal agency is a welcome one, but it's unfortunately limited in scope.