Sen. Dianne Feinstein, D-Calif., speaks as Facebook's General Counsel Colin Stretch, Twitter's Acting General Counsel Sean Edgett, and Google's Law Enforcement and Information Security Director Richard Salgado, testify during a Senate Committee on the Judiciary, Subcommittee on Crime and Terrorism hearing on Capitol Hill in Washington, Tuesday, Oct. 31, 2017, on more signs from tech companies of Russian election activity. (AP Photo/Andrew Harnik)