Of all the social media platforms, Twitter has been particularly aggressive lately when it comes to denying inaccurate election-related posts and hiding messages. That means Twitter's chief executive Jack Dorsey may face a particular fire if he testifies before the Senate Judiciary Committee on social media and censorship Tuesday.
President Trump and other Republican leaders have been claiming for months – and increasingly vocal in the last few days – that Mr Dorsey was wrong about them. They threatened to withdraw legal protection for Twitter and other social media platforms.
They are likely to cast their anger over two recent developments. One of these was Twitter's decision last month to prevent users from sharing an unfounded New York Post article about Joseph R. Biden Jr.'s son Hunter. Twitter restricted sharing the article more than Facebook did, and drew shouts of censorship from Republicans.
The other focus is likely to be on Twitter's handling of election-related content, particularly how the company appears to have heavily moderated Mr Trump and other conservatives. Between Election Day and November 5, Twitter labeled 38 percent of Mr Trump's 29 tweets and retweets as controversial or misleading, according to a New York Times tally. Some of the tweets were not visible.
Last week, Twitter said it had classified 300,000 tweets related to the presidential election as controversial, up 0.2 percent of the total on the matter. It also said the number of people tweeting the news fell 29 percent after attempts to stop the exchange of misinformation.
"We want to be very clear that we do not consider our work in this area to be done," said Dorsey in a prepared testimonial for the hearing. “Our work here continues and our teams are learning and improving how to address these challenges and gain the trust of the people who use Twitter. I look forward to continuing to work with you on solutions and building guides for the future of the Internet. "
This is Mr. Dorsey's fourth appearance before lawmakers in recent years. Last month he testified before the Senate Committee on Commerce, Science and Transport along with Google's CEO Sundar Pichai and Facebook's CEO Mark Zuckerberg.
Most questions were asked of Mr Dorsey at that hearing. Texas Senator Ted Cruz and other Republican leaders grilled him over his decision to restrict the New York Post article's circulation. Twitter later overturned its decision and allowed people to post links to the article.
On Tuesday, Twitter also unveiled Fleets, a feature that allows users to tweet short-lived messages. People can temporarily post photos or text on their Twitter pages, with the post being automatically deleted 24 hours later.