https://www.reuters.com/article/us-facebook-cambridge-analytica-ftc/u-s-regulator-state-attorneys-look-for-answers-from-facebook-idUSKBN1H2212 >The leading U.S. consumer protection regulator and attorneys representing 37 states stepped up pressure on Facebook Inc on Monday to explain how the social network allowed data of 50 million users get into the hands of a political consultancy.