https://finance.yahoo.com/news/facebook-ceo-apologizes-says-company-155501276.html

"It’s clear now that we didn’t do enough to prevent these tools from being used for harm..." he said in remarks released by the U.S. House Energy and Commerce Committee on Monday. "That goes for fake news, foreign interference in elections, and hate speech, as well as developers and data privacy."

Zuckerberg was meeting with lawmakers on Capitol Hill on Monday, ahead of his scheduled appearance before two Congressional committees on Tuesday and Wednesday.