Mark Zuckerberg is doing some advance work ahead of his appearance in front of Congress, including Facebook’s just announced changes to combat election meddling. “The social media company will now begin labeling all political and issue ads, and showing who paid for them, and it will require anyone who wants to run a political or issue ad to verify their identity and location.” It’s a good thing that Facebook will now label political ads and tell you who paid for them. But the important part of the story is the pressure it took to get them to do this. There’s no such thing as self-regulation.