On his 99th day in office, 49 years after first entering the Senate, President Biden will deliver his first speech to a joint session of Congress. David Chalian previews what to expect from his big speech and explains what new CNN poll numbers say about where the president stands with the American people at his 100-day mark. Plus, what to expect from Senator Tim Scott's Republican rebuttal. To learn more about how CNN protects listener privacy, visit cnn.com/privacy