https://www.cnbc.com/2018/03/19/new-york-times-digital-facebookas-role-in-data-misuse-sets-off-storms-on-two-continents.html

Facebook on Sunday faced a backlash about how it protects user data, as American and British lawmakers demanded that it explain how a political data firm with links to President Trump’s 2016 campaign was able to harvest private information from more than 50 million Facebook profiles without the social network’s alerting users.

Senator Amy Klobuchar of Minnesota, a Democratic member of the Senate Judiciary Committee, went so far as to press for Mark Zuckerberg, Facebook’s chief executive, to appear before the panel to explain what the social network knew about the misuse of its data “to target political advertising and manipulate voters.”