https://phys.org/news/2018-09-facebook-twitter-defend-efforts-election.html

Congress has sharply criticized the social media companies over the last year as it has become clear that they were at the forefront of Russia's interference in the 2016 elections and beyond. That scrutiny has led to additional criticism over the companies' respect for user privacy and whether conservatives are being censored—frustrations that are particularly heightened ahead of the midterms.

"The companies have made progress, the government has made progress, but the bad guys have made progress as well," said Virginia Sen. Mark Warner, the top Democrat on the Senate intelligence committee, which will hear from both companies in the morning on the subject of foreign interference. Warner has proposed a series of ways the companies could be regulated for the first time.