Nine days later Zuckerberg was in Peru, at a summit that President Obama was also attending. The president took him into a private room and made a direct appeal: He had to take the threat of disinformation more seriously, or it would come to haunt the company, and the country, in the next election. Zuckerberg pushed back, Obama’s aides later told me. Fake news was a problem, but there was no easy fix, and Facebook wasn’t in the business of checking every fact that got posted in the global town square. Both men left the meeting dissatisfied.
