In a congressional hearing this week, OpenAI’s chief executive, Sam Altman, appeared to be on the same page as lawmakers: It’s time to regulate A.I. But like so many other proposals to regulate tech, will it actually happen? The Times’s technology reporter Cecilia Kang helps us understand whether Congress will actually act, and what that could look like. Then, Casey talks with Twitter’s former head of trust and safety, Yoel Roth, before and after Elon Musk took over the company.