The most notable political speeches that were never given

Gen. Dwight Eisenhower’s prepared remarks if D-Day failed, and warnings President John F. Kennedy would have issued in Dallas had he not been assassinated are among many potential addresses examined in a new book, "Undelivered: The Never-Heard Speeches that would have Rewritten History." Amna Nawaz spoke with author Jeff Nussbaum, President Biden's former senior speech writer, to learn more.