 Karen, at least symbolically, any Oval Office address is important. This is one of those important moments. There remain tonight many questions about how and why the attempted assassin shot at former President Trump, how it was able to happen in the first place. The president has said the motive remains unclear. Sources saying it was a 20-year-old shooter. Here now, President Biden from the Oval Office. I want to speak to you tonight about the need for us to lower the temperature in our politics and to remember...