Facebook whistleblower Frances Haugen will appear before the US Congress on Tuesday, where she is set to sharply criticize her former employer as "one of the most urgent threats" facing the country, and to demand transparency about its operations.
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Haugen, a former product manager on Facebook's civic misinformation team, says the social media giant keeps its algorithms and operations a secret.
In an era when bipartisanship is rare on Capitol Hill, the top Democrat and Republican on the subcommittee agreed on the need for big changes at Facebook.
Haugen came forward this week to reveal she was the one who provided documents used in a Wall Street Journal investigation and a Senate hearing on Instagram's harm to teen girls.
Facebook did not respond to a request for comment.
