The presidents of Harvard University, the Massachusetts Institute of Technology and the University of Pennsylvania testify in Congress about how they are handling antisemitism and protests on their campuses, while trying to balance the need for free speech. Speaking in order at Harvard's Claudine Gray, Penn's Liz Magill, Dr. Pamela Nadell, a professor at American University, and MIT President Sally Kornbluth. They appeared before the House Education and the Workforce Committee on Tuesday.