https://www.reuters.com/article/us-usa-senate-tech/heads-of-facebook-twitter-could-testify-to-u-s-senate-panel-post-election-sen-graham-says-idUSKBN2782OW >The U.S. Senate Judiciary Committee is close to an agreement with Twitter head Jack Dorsey and Facebook CEO Mark Zuckerberg that would have them testify to the panel later this year, Judiciary Chairman Lindsey Graham told reporters on Friday.