Watch as Facebook CEO Mark Zuckerberg testifies on Capitol Hill

Facebook CEO Mark Zuckerberg arrives on Capitol Hill in Washington, Monday, April 9, 2018, to meet with Sen. Dianne Feinstein, D-Calif., the ranking member of the Senate Judiciary Committee. Zuckerberg will testify Tuesday before a joint hearing of the Commerce and Judiciary Committees about the use of Facebook data to target American voters in the 2016 election. (AP Photo/J. Scott Applewhite) (The Minnesota Star Tribune)