Facebook Chief Operating Officer Sheryl Sandberg acknowledged that the social media network failed to crack down on attempts from Russian Federation to influence the 2016 USA presidential elections, according to AFP.
"If we don't find scalable solutions, we lose our business and continue to threaten the original privilege and liberty we were given to create Twitter in the first place".
"This interference was completely unacceptable. It violated the values of our company and of the country we love".
Mr Dorsey countered accusations of political bias, saying: "We analysed tweets sent by all members of the House and Senate, and found no statistically significant difference between the number of times a tweet by a Democrat is viewed versus a Republican, even after our ranking and filtering of tweets has been applied".More news: Serena Williams turns heads with outfit at US Open
Rep. Mullin repeated many of Jeong's now-infamous tweets, including her complaint that white people "marking up the internet like dogs pissing on fire hydrants", that she receives "joy" from being "cruel to old white men", and that whites are "logically ... only fit to live underground like groveling goblins".
"The committee takes this issue very seriously, and we appreciate that Facebook and Twitter are represented here this morning with an equivalent and appropriate measure of seriousness", Senator Burr of North Carolina said.
The committee chairman - Sen.
The companies have been criticized for what others see as an effort to exclude conservative voices.
"We didn't fully predict or understand the real-world negative consequences", he said.
Dorsey will appear before the US House of Representatives' Energy and Commerce Committee after Republicans raised concerns about how the social media platform polices content.
"We believe strongly in being impartial, and we strive to enforce our rules impartially".
As the hearing began, social media stocks fell, with Twitter down 4.5 percent and Facebook around 1 percent lower.