Update 2: Watch Jack Dorsey's solo testimony in front of the House Energy and Commerce Committee, where he will seek to address GOP lawmakers' allegations that Twitter targets conservative users and accounts - something President Trump has weighed in on in July:

Twitter “SHADOW BANNING” prominent Republicans. Not good. We will look into this discriminatory and illegal practice at once! Many complaints. — Donald J. Trump (@realDonaldTrump) July 26, 2018

Will anyone ask Jack about his current and former employees admitting to the practice?

Not only does Twitter shadow ban prominent Republicans, they also consider any Trump supporter who tweets about "God," "guns," or "the flag" a Russian bot (as seen in our undercover expose.) https://t.co/lxo0JoN2GP pic.twitter.com/MAPhk8tsvr — James O'Keefe (@JamesOKeefeIII) July 25, 2018

Update: Jack Dorsey says that the purpose of Facebook "as hosting and serving conversations... but also to increase the health of that conversation as well."

Twitter CEO @jack on the purpose of his platform: "For our part, we see our platform as hosting and serving conversations... but also to increase the health of that conversation as well." pic.twitter.com/N4w4j6FnnO — ABC News Politics (@ABCPolitics) September 5, 2018

More highlights:

* Twitter is removing 200% more accounts for violating policies

* Twitter planning to build a feature to flag bots

* Company has had some difficulty in detecting bot accounts that appear to be human

Twitter CEO Jack Dorsey and Facebook COO Sheryl Sandberg are set to tell lawmakers Wednesday that their companies have taken measures to combat foreign interference in future elections.

At 9:30AM EST, Sandberg and Dorsey will appear together in front of the Senate Intelligence Committee, while Dorsey will sit down with the House Energy and Commerce Committee at 1:30PM ET.

"Our adversaries are determined, creative and well-funded," Sandberg plans to say, according to her prepared remarks. "But we are even more determined — and we will continue to fight back."

Dorsey said in tweets ahead of the hearing: "We realize Twitter is used by many as a public square, and our singular objective as a company is to help increase the health and integrity of conversations found within."

It’s an honor to be able to speak to the American people on behalf of our service. We realize Twitter is used by many as a public square, and our singular objective as a company is to help increase the health and integrity of conversations found within. — jack (@jack) August 31, 2018

Dorsey's second congressional hearing will seek to address allegations by Republican lawmakers that Twitter is unfairly targeting conservative-leaning users, charges echoed by President Trump.

Alex Jones?

At the press conference in Washington, DC to face those who are trying to censor me online. #1a #FreeSpeech #Infowars



👉 Watch LIVE: https://t.co/LJ0T1wZoiK 👈 pic.twitter.com/egfQmr0LgB — Alex Jones (@RealAlexJones) September 5, 2018

Also in attendance is Infowars founder and host Alex Jones, who is in Washington D.C. to "face his accusers."

Jones said he was attending the hearings to face his accusers, who have charged him with being everything from a Russian agent to a racist. Jones has reportedly obtained a front row seat at the hearings and has vowed to challenge the media on how they misreported the reasons he was banned by Big Tech. He will also hold a special press conference while in DC. -Infowars

Exclusive! Alex Jones To Attend Congressional Censorship Hearings In DC https://t.co/pBaKCKYl2R — Alex Jones (@RealAlexJones) September 5, 2018

We're gonna need a bigger popcorn bowl...