https://www.reuters.com/article/us-facebook-cambridgeanalytica-britain/zuckerberg-will-not-appear-before-uk-parliament-committee-media-idUSKBN1H3121

Facebook boss Mark Zuckerberg will not answer questions from British lawmakers over a scandal in which the social media network let millions of users' data get into the hands of political consultancy Cambridge Analytica, The Telegraph newspaper and the BBC reported.