One of the witnesses chosen by Democrats to make a case for the impeachment of President Trump will sit on a new Facebook board that will make binding decisions about what content is allowed on the social media platform.

Pamela Karlan, a Stanford University professor, is the co-director of Stanford’s Supreme Court Litigation Clinic. She became a household name in 2019 during her testimony in front of the House Judiciary Committee, where she testified in favor of Trump’s impeachment.