https://www.cnet.com/news/facebooks-mark-zuckerberg-did-and-didnt-answer-questions-on-data-privacy-washington-hearings/ >Mark Zuckerberg's apology tour reached a crescendo this week when he went to Washington to testify before two congressional panels. The first, on Tuesday, was with the Senate Judiciary and Commerce committees. The following day, Zuckerberg faced the House Energy and Commerce Committee. >His goal: to reassure legislators, investors and users of the world's largest social network that Facebook's CEO had a handle on issues related to data privacy, fake news and foreign election tampering. The tour came after a scandal last month involving Cambridge Analytica, a digital consultancy that improperly used data from 87 million user accounts without permission to help its clients sway public sentiment -- including reportedly working on behalf of the Donald Trump campaign in the 2016 presidential election.