As the Delta Variant continues to spread in the U.S., President Joe Biden has some big questions to answer in the coming weeks. CNN Political Director David Chalian breaks down what the White House is considering about revising mask guidance, even for vaccinated Americans. On top of that, the start of the school year is looming and there’s still no consensus on whether a booster shot is needed.To learn more about how CNN protects listener privacy, visit cnn.com/privacy