CNN anchor Alisyn Camerota said Thursday on “Newsroom” that she was getting emotional after the Centers for Disease Control and Prevention announced new guidelines saying mask-wearing is not required for vaccinated people during a press event. Camerota said, “I just want to take a moment to mark this minute because I found myself welling up when Dr. Walensky was talking, and she said, we have an exciting announcement. I still find myself welling up, even right now, because you know, you and I talked every morning during the past year about how many more Americans were going to die, what...