Meanwhile, on the Russian ad issue, Sandberg said the election meddling on the Facebook platform "shouldn't have happened" and she wouldn't discuss Russia or Trump. Sandberg told congressional investigators on Thursday that in addition to the ads, the company would provide the rest of the information from accounts linked to Russian Federation, the spokesman said.
Facebook said it believed the messages were likely bought by people in Russian Federation before and after the 2016 election.
"The thing about free expression is that when you allow free expression, you allow free expression", Sandberg said.
Chief Operating Officer Cheryl Sandberg made the announcement during a closed-door meeting on Capitol Hill Thursday, Oct. 12, as part of her tour of Washington.
In response to another question, Sandberg refused to describe Facebook as a media company, a designation that would require it to submit to a different kind of legal framework that governs the identification of political ads on TV or the general expectation that content is fact-based and free from hoaxes.
The Trump campaign used Cambridge Analytica, a firm backed by Trump supporter Robert Mercer, which blended its own database of information on American voters with Facebook to find swing voters or discourage people from voting at all.
"None of us should want this kind of foreign interference and in others to prevent it, we are all going to have to fully cooperate with each other, with government, across the board", Sandberg said.
She also said, the site had taken steps to stop those behind the fake accounts profiting from the ads they put on Facebook.
Facebook's CEO, Mark Zuckerberg, has backtracked from calling the idea of Facebook's influence on the election "pretty insane". "We told Congress and the intelligence committees that when they are ready to release the ads, we are ready to help them".
"Absolutely", Ms Sandberg told Axios when asked if she supported releasing those ads publicly.
Rep. Cedric Richmond, a Democrat from Louisiana who chairs the caucus, said that 95 percent of the 3,000 ads were placed on Facebook itself, while the remaining five percent were on Instagram.
Facebook, in particular, has earned Lazowska's ire. Currently, Facebook's eight-member board of directors is all white and 75 per cent male. Two, including Sandberg, are women.