In this Sept. 5, 2018, file photo Facebook COO Sheryl Sandberg testifies before the Senate Intelligence Committee hearing on 'Foreign Influence Operations and Their Use of Social Media Platforms' on Capitol Hill in Washington. For the past decade, Sandberg has been the poised, reliable second-in-command to Facebook CEO Mark Zuckerberg, helping steer Facebooks rapid growth around the world, while also cultivating her brand in ways that hint at aspirations well beyond the social network. (AP Photo/Jose Luis Magana, File)